Sgt Stout M-SHORAD.

Key Technical Specifications

• Design

  The SGT Stout M-SHORAD Increment 1 is based on the M1265A1 Stryker Double V Hull (DVH), an 8×8 wheeled armored vehicle modified to accommodate an integrated short-range air defense mission equipment package. The conversion combines the Stryker's armored hull, automotive components, and electrical infrastructure with a roof-mounted Moog Reconfigurable Integrated-weapons Platform (RIwP) turret, missile launchers, automatic weapons, and surveillance equipment. General Dynamics Land Systems manufactures the Stryker vehicle and installs the mission equipment configured by Leonardo DRS, which serves as the principal systems integrator. The design retains the mobility characteristics of the Stryker family while providing the structural and electrical interfaces required for air defense equipment. Unlike a MIM-104 Patriot arrangement in which surveillance and weapons are distributed between separate vehicles, the SGT Stout incorporates the principal equipment necessary for local target detection, identification, tracking, and engagement on a single armored chassis.

  The Double V Hull configuration incorporates an underbody structure intended to improve protection against mines and explosive threats compared with earlier flat-bottom Stryker vehicles. The A1 modernization also introduces a reinforced chassis, upgraded automotive components, increased electrical generation capacity, and additional provisions for mission equipment integration. These modifications are important because the SGT Stout carries a turret, missile launchers, radar assemblies, ammunition, and associated electronics above and within the original vehicle structure. This installation increases demands on the roof structure, electrical distribution system, and vehicle suspension, while the elevated equipment affects the distribution of mass. However, the available information does not establish the complete combat weight, center-of-gravity position, or verified external length, width, and height of the fully equipped SGT Stout. Figures associated with other Stryker variants therefore cannot automatically be substituted for those of the operational air defense configuration.

  The principal weapons installation is the Moog Standard RIwP, a remotely operated modular turret constructed primarily from armored steel and designed to accommodate different combinations of guns, missiles, sights, and associated equipment. Its base assembly weighs 2,500 lb (1,134 kg) without weapons or other mission payloads and measures 64.7 inches (1.643 m) in width. With two Stinger Vehicle Universal Launchers (SVULs), the turret's width increases to 101.8 inches (2.586 m), an increase of 943 mm over the base assembly. The turret mounts on a standard 1 m NATO turret bearing without requiring a penetration into the vehicle's occupied cabin. This arrangement preserves the armored separation between the crew and the external weapon installation while simplifying integration with the Stryker roof structure. The Standard RIwP should not be confused with the separately available Lightweight RIwP, which belongs to the same turret family but is not the confirmed installation on operational SGT Stout vehicles.

  The RIwP provides continuous 360° horizontal rotation, with a standard weapon elevation range extending from -20° to +60° and an optional maximum elevation of +80°. Its maximum angular traverse speed is 1 rad/s, equivalent to 57.3°/s, while the specified angular acceleration is 1 rad/s². Moog also lists minimum angular speeds of 0.15 mrad/s in azimuth and 0.20 mrad/s in elevation, allowing fine adjustments when tracking targets. The manufacturer's specified firing stability is no more than 0.3 mrad under its defined test conditions. The turret also incorporates stabilized weapon and sight assemblies to support engagements against stationary or moving targets while the vehicle is stationary or moving. A backup manual operating mode is available with reduced performance, although the precise limitations of this mode on the SGT Stout are not established.

  The turret uses standardized mechanical, electrical, and software interfaces to accommodate different mission payloads without requiring a completely new weapons installation. Moog identifies 85% subcomponent commonality across the wider RIwP family, covering elements of the mechanical structure, drive systems, and associated equipment. Compatible payloads can be exchanged using organic maintenance personnel and limited lifting equipment, with some changes requiring only minutes under the manufacturer's specified conditions. This does not establish that complete SGT Stout weapon configurations, including their software integration and qualification, can be exchanged within the same period. The architecture supports independently stabilized sight assemblies, additional surveillance equipment, identification systems, and alternative weapon installations. These provisions are relevant to the planned Increment 3 modernization because they permit changes to selected mission equipment without requiring replacement of the Stryker chassis or the complete turret architecture.

  The crew controls the remotely operated turret through a common operator station equipped with a touchscreen display and hand controller. The interface provides access to weapon selection, turret positioning, target designation, and fire control functions, while Ethernet-based connections allow the turret to exchange information with the vehicle's mission computers and associated equipment. The Standard RIwP operates from a 28 V DC electrical supply compliant with MIL-STD-1275 and has specified electrical requirements of 0.25 kW when quiescent, 0.70 kW during scanning, and 3.20 kW during target engagement. Peak electrical demand reaches 16 kW, more than five times the listed normal engagement consumption. These figures concern the turret itself and exclude the additional power required by the vehicle's surveillance radars, communications equipment, and other systems. The integration of these electrical consumers is supported by the Stryker A1's upgraded electrical infrastructure, whose automotive and power-generation characteristics are addressed separately in this technical data sheet.

  Crew protection is provided by the armored Stryker hull, the Double V Hull underbody configuration, and the remotely operated nature of the weapons installation. Moog lists an armor protection up to STANAG Level III for the Standard RIwP in applicable configurations, with optional additional protection for sights and other external equipment. This rating concerns the turret and should not be interpreted as a confirmed ballistic protection classification for the complete SGT Stout vehicle. The turret architecture also permits direct-fire ammunition to be replenished from within the armored vehicle, reducing crew exposure during that activity. Missile reloads can be conducted from roof hatches under partial cover, although they do not provide the same level of protection as operations conducted entirely inside the hull. The available information does not establish the complete vehicle's ballistic protection rating, mine resistance level, or the armor thickness of its hull and turret components.

• Armament

  The SGT Stout M-SHORAD Increment 1 combines guided surface-to-air missiles with two automatic weapons mounted on the Moog RIwP remotely controlled turret. Its principal direct-fire weapon is an XM914 30 mm automatic cannon, supplemented by an M240 7.62 mm machine gun, while FIM-92 Stinger missiles provide the vehicle's guided air defense capability. The revised operational configuration identified in 2026 carries eight Stinger missiles in two four-round launcher assemblies, replacing the earlier arrangement combining four Stingers with AGM-114L Longbow Hellfire missiles. This combination provides distinct weapon options for aerial threats of different sizes and characteristics, as well as selected ground targets. The missile launchers and guns share the turret's integrated control architecture, although their engagement characteristics, guidance methods, and ammunition requirements differ. The missiles' propulsion, guidance, performance, and development history are examined separately in the next section.

  The XM914 is a 30 mm automatic cannon derived from the M230LF chian gun and chambered for 30×113 mm ammunition. Its installation gives the SGT Stout a direct-fire weapon against small unmanned aircraft, selected low-altitude aerial targets, personnel, and lightly protected ground vehicles. The Standard RIwP configuration lists 115 ready rounds of 30 mm ammunition, while the broader turret family supports typical primary-weapon capacities ranging from 100 to 250 rounds, depending on the installation. The 115-round figure therefore represents a documented turret configuration rather than a verified ammunition capacity for every SGT Stout vehicle. The cannon's effectiveness depends on the target's dimensions, movement, engagement distance, projectile characteristics, and the accuracy of the fire control solution. Against small drones, these factors are particularly important because a conventional projectile must intercept a comparatively small moving target.

  The U.S. Army intends to improve the XM914's counter-UAS effectiveness through the XM1223 Multi-Mode Proximity Airburst (MMPA) munition developed at Picatinny Arsenal. The XM1223 is intended to provide a multipurpose 30 mm ammunition option for aerial threats, ground targets, and personnel, with fielding planned for late FY2028 under the Increment 3 modernization effort. Its proximity and airburst functions are particularly relevant against small drones because they are intended to produce an effect near the target rather than relying exclusively on a direct projectile impact. This could improve the cannon's effectiveness against targets whose small dimensions and movement make conventional direct hits difficult. The new ammunition would also provide an additional engagement option against drones without requiring the expenditure of a guided interceptor. The available information does not establish the XM1223's muzzle velocity, explosive filling, fragmentation characteristics, effective engagement range, or the number of rounds intended to be carried by each SGT Stout.

  The secondary direct-fire weapon is an M240 7.62 mm machine gun mounted alongside the XM914 cannon. It provides an additional option against personnel and selected ground threats for which the 30 mm cannon or guided missiles would be unnecessary. Moog lists a typical secondary-weapon ammunition capacity of 250 to 500 ready rounds for Standard RIwP configurations, although the exact capacity of the operational SGT Stout installation is not independently established. The M240 is operated remotely from inside the armored vehicle through the turret's control station, allowing the crew to engage nearby threats without occupying an exposed weapon position. Its inclusion provides a lower-caliber alternative for local defense and preserves the larger cannon's ammunition for targets requiring greater destructive effect. The machine gun is not the vehicle's principal counter-aircraft weapon, and the available information does not establish a dedicated anti-drone engagement envelope for it.

  The original Increment 1 missile arrangement included AGM-114L Longbow Hellfire missiles alongside a four-round Stinger launcher, giving the vehicle a precision-guided weapon against selected ground targets in addition to its surface-to-air armament. However, the external Hellfire installation exposed the missiles to vibration, weather, and mechanical stresses as the Stryker moved over rough terrain. These conditions raised concerns involving missile reliability, maintenance requirements, and safety, prompting a revised configuration centered on two four-round Stinger launchers. The change increased ready-to-fire Stinger capacity from four to eight missiles, a 100% increase, while removing the dedicated Hellfire precision anti-armor capability from the revised arrangement. This modification placed greater emphasis on the vehicle's primary air defense mission and increased the number of missile engagements available before replenishment. It did not increase the cannon's ammunition capacity or establish any additional ability to engage several aerial targets simultaneously.

  The turret's fire control architecture supports the selection and operation of different weapons against stationary and moving targets, including engagements conducted while the Stryker itself is moving. Independently stabilized sights and weapon assemblies help compensate for vehicle movement, while target information can be received from the vehicle's integrated surveillance equipment or external command-and-control systems. This allows the operator to direct the weapon installation toward a detected threat before completing identification and engagement procedures. The arrangement is relevant to both aerial and ground targets, although the ability to fire while moving does not establish identical accuracy or engagement performance under every terrain and vehicle-speed condition. The turret also supports integration of ammunition with proximity or airburst functions, which is relevant to the planned XM1223 introduction. The specific detection and tracking functions of the radar and electro-optical equipment are addressed in a dedicated section rather than repeated here.

  The wider Standard RIwP family can also accommodate alternative 25 mm and 30 mm automatic cannons, 7.62 mm and 12.7 mm machine guns, and several guided missile or rocket families, including Coyote, APKWS, Javelin, JAGM, Brimstone, and Hellfire. These are manufacturer-supported integration possibilities and should not be classified as weapons fielded on operational SGT Stout vehicles. The separate Leonardo DRS counter-UAS Stryker demonstrator combines a laser weapon, 70 mm APKWS II guided rockets, and a 30 mm cannon, while the Army's Increment 2 effort investigated a 50 kW laser as an alternative short-range air defense weapon. Increment 2 was not selected for operational procurement following FY2023-FY2024 user assessments, and the separate Leonardo DRS demonstrator has not been confirmed as an operational SGT Stout variant. Consequently, the principal planned armament improvements for the existing Increment 1 fleet remain the NGSRI missile and XM1223 ammunition. These developments would modify the vehicle's engagement capabilities while retaining the established Stryker-based weapons installation.

• Missiles

  The SGT Stout M-SHORAD Increment 1 uses the FIM-92 Stinger as its principal guided interceptor, with eight ready-to-fire missiles distributed between two four-round Stinger Vehicle Universal Launchers (SVULs) installed on the Moog Reconfigurable Integrated Weapons Platform (RIwP) turret. The launchers are configured by Raytheon and integrated into the Leonardo DRS Mission Equipment Package, which connects the missile armament to the vehicle's surveillance, identification, and fire control equipment. The eight-missile arrangement is the configuration identified for the operational SGT Stout in 2026, replacing the earlier combination of four Stinger missiles and AGM-114L Longbow Hellfire missiles. This change increases ready-to-fire Stinger capacity by 100%, allowing eight launches before the launchers require replenishment. The actual number of successful interceptions depends on target characteristics, missile performance, and the number of interceptors expended per target, while a confirmed simultaneous engagement capacity has not been established.

  The FIM-92 Stinger is a short-range surface-to-air missile powered by a solid-propellant rocket motor and guided by a passive infrared seeker, with later configurations incorporating infrared and ultraviolet target-discrimination capabilities. The Stinger Block 1 is among the missile configurations relevant to the SGT Stout, with a maximum speed of Mach 2.2, equivalent to 745 m/s. The missile measures 1.52 m in length, has a diameter of 70 mm, and weighs 10.1 kg without its complete launch assembly. Its high-explosive fragmentation warhead weighs 3 kg, with impact or proximity fuzing depending on the missile configuration. Passive homing allows the interceptor to track its target after launch without continuous radar illumination or steering commands from the Stryker. This differs from command-guided missiles that require the launching vehicle or another fire control system to maintain a guidance link throughout the engagement.

  The Stinger family has engagement ranges of 4.8 km for earlier configurations and up to 8 km for more recent variants, with a maximum engagement altitude of 3.8 km identified in the available specifications. These values do not constitute a single guaranteed engagement envelope for every SGT Stout vehicle, as missile performance depends on the interceptor variant, target speed, altitude, aspect, and atmospheric conditions. Helicopters operating close to terrain, fixed-wing aircraft crossing the engagement area, and small drones also present different thermal signatures and interception requirements. The vehicle's radar equipment can detect and track some aerial targets at distances greater than the Stinger's effective engagement range, providing time for identification and engagement decisions. However, detecting an aircraft at 25 km does not mean that the missile can engage it at that distance. The exact seeker-acquisition distance, minimum engagement range, and engagement altitude of the specific Stinger configuration installed on every operational SGT Stout have not been established.

  The original M-SHORAD Increment 1 missile installation also incorporated AGM-114L Longbow Hellfire missiles, giving the vehicle a guided weapon intended principally for precision engagements against armored ground targets. The AGM-114L uses an active millimeter-wave radar seeker operating at 94 GHz, rather than the semi-active laser guidance employed by several other Hellfire variants. It weighs 47 kg, including a 9 kg tandem-charge high-explosive anti-tank warhead, and has an engagement range of 7.1 to 11 km depending on launch conditions. Its guidance system supports lock-on-before-launch (LOBL) and lock-on-after-launch (LOAL) modes, subject to the available targeting information and weapon integration. The tandem-charge warhead is intended to defeat armored vehicles fitted with explosive reactive armor, while radar guidance reduces dependence on continuous optical target designation. The Longbow Hellfire therefore provided a distinct anti-armor capability rather than duplicating the Stinger's dedicated air defense role.

  The external Hellfire installation was subsequently reconsidered because the missiles were exposed to vibration, weather, and mechanical stresses during movement over rough terrain. These concerns were particularly relevant to a vehicle intended to accompany maneuver formations, where prolonged cross-country movement can impose repeated mechanical loads on externally mounted equipment. Replacing the Hellfire installation with a second Stinger launcher increased the number of ready-to-fire surface-to-air missiles while removing the dedicated radar-guided anti-armor missile. The Standard RIwP permits missile replenishment through vehicle roof hatches under partial cover, but this does not provide the same protection as reloading entirely inside the armored hull. The supplied specifications do not establish the time required to reload all eight Stingers, the number of spare missiles carried internally, or whether every initially fielded vehicle has completed conversion to the revised configuration.

  The principal future missile modernization is the Next Generation Short Range Interceptor (NGSRI), intended to replace the FIM-92 Stinger under M-SHORAD Increment 3. In March 2023, the U.S. Army selected Lockheed Martin and Raytheon Technologies to develop competing prototypes, with the objective of increasing engagement range, interceptor speed, lethality, and effectiveness against emerging aerial threats. The replacement missile is intended to retain a soldier-portable configuration while supporting installation on vehicle-mounted launchers, including the SGT Stout. Its requirements address rotary-wing aircraft, fixed-wing aircraft, and Group 2 and Group 3 unmanned aircraft systems. Development includes improved seeker technology and guidance capabilities intended to address targets that are increasingly difficult for legacy Stinger missiles to intercept. The program entered rapid prototyping in 2023, with contractor selection and transition toward production planned for FY2028.

  The NGSRI development progressed through flight testing during 2025 and 2026, including Raytheon's July 15, 2026, demonstration at Dugway Proving Ground, Utah. During that event, multiple guided interceptors were launched from a soldier-portable Command Launch Assembly against simulated aerial threats, demonstrating target acquisition, tracking, interception, and destruction. Raytheon's design combines seeker optics with a solid-propellant rocket motor developed by Northrop Grumman, while Lockheed Martin is developing a competing interceptor. The Army's FY2027 research, development, test, and evaluation request includes $215.1 million for NGSRI, with the objective of selecting a contractor in FY2028. The planned modernization would retain the existing Stryker-based vehicle while introducing a more capable interceptor, although launcher adaptation, qualification, and integration will remain necessary. The final missile length, diameter, mass, warhead characteristics, maximum speed, and engagement range have not been established as of November 10, 2026.

  The NGSRI is intended to become the principal future surface-to-air interceptor for the existing SGT Stout fleet rather than requiring the acquisition of a completely new armored vehicle. The modular RIwP architecture provides mechanical and electronic interfaces for integrating alternative guided weapons, but compatibility with the turret family does not automatically establish qualification for operational service. Other weapons associated with RIwP integration possibilities, including Coyote, APKWS, Javelin, JAGM, and Brimstone, are not confirmed armament configurations of the operational SGT Stout. Similarly, the separate Leonardo DRS counter-UAS Stryker demonstrator incorporating 70 mm APKWS II guided rockets should not be confused with the Increment 1 vehicle. The operational missile configuration therefore remains centered on Stinger, with NGSRI representing the planned successor under Increment 3.

• Radars

  The SGT Stout M-SHORAD Increment 1 incorporates four Multi-Mission Hemispheric Radar (MHR) panels developed by RADA Electronic Industries, now part of Leonardo DRS through DRS RADA Technologies. The radars provide continuous 360° azimuth surveillance, allowing the vehicle to detect and track aerial threats approaching from different directions without requiring a mechanically rotating antenna. The MHR is a compact, solid-state, software-defined pulse-Doppler radar using active electronically scanned array (AESA) technology in the S-band. Its electronic beam steering permits surveillance and target tracking within the field of view of each panel, while overlapping sectors provide coverage around the Stryker. The radar family supports surveillance against aircraft, helicopters, unmanned aircraft, and selected incoming projectiles, although the functions available depend on the particular radar configuration. The vehicle's onboard radar installation provides the initial detection and tracking information used by the fire control system to direct its stabilized sight toward aerial targets.

  Each MHR panel measures 504 mm in diameter and 206 mm in depth, with an individual weight of 23 kg. The four-panel installation has a listed total system weight of 105 kg, compared with 92 kg for the combined antenna assemblies alone, indicating an additional 13 kg associated with supporting equipment. Each radar operates from a nominal 28 V DC electrical supply, with an acceptable input range of 16 to 32 V compliant with MIL-STD-1275. Average electrical consumption is 320 W per panel, giving the four antennas a combined nominal demand of 1.28 kW, excluding associated mission computers and communications equipment. Average transmitter power is 60 W per panel, and the radar uses passive cooling without forced-air equipment. Its specified operating temperature range extends from -40°C to +55°C, while the operating wind-speed rating is 35 mph with allowance for additional gusts. Gigabit Ethernet, discrete connections, and serial interfaces support communication with the vehicle's mission equipment.

  The MHR family includes the RPS-40, RPS-42, and RPS-44 configurations, each optimized for different surveillance requirements. The RPS-40 emphasizes the detection of rockets, artillery, mortars, rocket-propelled grenades, and anti-tank guided missiles, with ranges of 5 km in hemispheric search and 10 km in sector search for applicable functions. The RPS-42 focuses on aerial surveillance against fixed-wing aircraft, helicopters, and unmanned aircraft, with a maximum range of 30 km. The RPS-44 is intended for surface surveillance and selected low-altitude aerial targets, with a maximum range of 40 km. Published minimum detection distances include 30 m for the RPS-40, 150 m for the RPS-42, and 100 m for the RPS-44. These figures reflect differences between radar configurations and operating modes, rather than a single combined surveillance capability. Although the RPS-42 is associated with the SGT Stout's air surveillance mission, the exact radar configuration and software standard fitted to every operational vehicle have not been fully disclosed.

  The published MHR detection figures provide additional information about performance against different target categories. Leonardo DRS identifies detection distances of 5 km for nano-UAVs, 25 km for medium-sized UAVs, 23 km for utility helicopters, 35 km for fighter aircraft, 20 km for fighters with reduced radar cross-sections, and 50 km for heavy transport aircraft. For ground and maritime targets, the radar family includes published detection distances of 10 km for pedestrians, 25 km for vehicles and medium-sized vessels, and 40 km for large vessels. Certain configurations can also detect light or medium mortars and short-range rockets at 5 km and heavy mortars at 6 km. The 5 km nano-UAV detection figure is only 20% of the 25 km figure for medium-sized UAVs, illustrating the substantial effect of target characteristics on surveillance performance. Similarly, the published range against reduced-radar-cross-section fighters is 42.9% shorter than the 35 km figure for representative conventional fighters. These are radar-family performance figures rather than guaranteed detection distances for the complete SGT Stout installation.

  The angular coverage of individual MHR panels depends on their configuration and operating mode. Certain versions provide 90° azimuth coverage per panel, while other Leonardo DRS specifications identify coverage reaching 120°, with four overlapping panels providing continuous surveillance around the vehicle. Published elevation coverage includes 0° to +70° for elevated-fire applications, 0° to +40° for direct-fire applications, and -10° to +70° for selected air surveillance configurations. Some MHR variants provide target-altitude coverage reaching 30,000 ft, equivalent to 9,144 m. Published angular accuracy is better than 0.5°, while range accuracy varies between 1 m, 10 m, and 50 m according to radar configuration. Maximum target-velocity specifications include 1,000 m/s for elevated-fire applications, 600 m/s for direct-fire applications, and 800 knots for a selected air surveillance configuration. These values must remain associated with their respective radar variants rather than being combined into an unsupported set of SGT Stout-specific specifications.

  The radar installation is complemented by an L3Harris WESCAM MX-GCS electro-optical/infrared independent stabilized sighting system. The MX-GCS is an above-armor sensor assembly intended to support target observation, recognition, identification, tracking, and engagement. Depending on configuration, its equipment includes daylight imaging, thermal imaging, laser rangefinding, and additional optical functions. Radar information can be used to cue the stabilized sight toward a detected aerial object, allowing the crew to obtain visual or thermal information before selecting a weapon. This combination is important because radar detection establishes the presence and movement of an object but does not necessarily provide sufficient information for positive identification. The SGT Stout also incorporates an identification-friend-or-foe (IFF) antenna, contributing to the identification process alongside the electro-optical sensors and information received from other units. The precise optical magnification, thermal detector characteristics, laser rangefinder performance, and identification equipment configuration have not been disclosed.

  The SGT Stout's surveillance equipment is integrated with the U.S. Army's Forward Area Air Defense Command and Control (FAAD C2) architecture and is interoperable with the AN/MPQ-64 Sentinel radar. This allows the vehicle to exchange air surveillance information with other air defense units and receive tracks generated by sensors operating beyond the immediate coverage of its onboard MHR installation. A FAAD C2 tablet can provide the vehicle commander with additional situational awareness and support the direction of the RIwP turret toward detected air tracks. The system can therefore contribute to a wider surveillance network while retaining an independent local detection capability. Terrain remains a significant limitation, particularly in mountainous or urban areas where buildings and elevated ground can obstruct radar coverage and create gaps in low-altitude surveillance. U.S. Army operational experience in Europe has identified the SGT Stout's onboard radars as providing local awareness within a 10 km radius under applicable conditions, including the ability to supplement other radars in terrain-masked areas. This operational figure should be distinguished from the longer detection distances published for individual MHR variants against representative targets.

  The radar and fire control architecture can also be improved through software modifications without necessarily replacing the antenna assemblies or optical equipment. On August 11, 2026, Leonardo DRS announced that an operational SGT Stout mission equipment package had successfully defeated Group 1 and Group 2 unmanned aircraft during U.S. government testing following updates to detection and fire control software. The changes did not require additional radar or weapon hardware, demonstrating that improvements in processing and integration can extend the threat categories addressed by the existing installation. However, the number of drones engaged, their dimensions, detection distances, tracking conditions, and engagement ranges were not disclosed. These results therefore demonstrate a broader counter-UAS capability without providing a new quantified detection envelope. Future modernization may further modify radar processing, target classification, and sensor integration as the SGT Stout receives the NGSRI and other Increment 3 improvements.

• Mobility

  The SGT Stout M-SHORAD Increment 1 uses the chassis of the M1265A1 Stryker Double V Hull A1 (DVH A1), an 8×8 wheeled armored vehicle powered by a Caterpillar C9 diesel engine rated at 450 hp (336 kW). The Stryker A1 modernization replaced the earlier 350 hp (261 kW) engine, increasing rated engine output by 100 hp, or 28.6%. The additional power was introduced alongside reinforced suspension, structural modifications, and upgraded vehicle electronics to accommodate the greater mass and electrical requirements of modernized Stryker configurations. These changes are particularly relevant to the SGT Stout because its air defense equipment adds a roof-mounted turret, missile launchers, surveillance radars, stabilized sights, and ammunition to the underlying armored vehicle.

  The Stryker A1 chassis has a rated weight capacity of 63,000 lb (28,576 kg), compared with 55,000 lb (24,948 kg) for the preceding configuration. This represents an increase of 8,000 lb (3,629 kg), equivalent to 14.5%, and provides additional structural capacity for heavier mission equipment. The Standard RIwP turret has a base weight of 2,500 lb (1,134 kg), while the complete four-panel MHR radar installation weighs 105 kg, giving these two assemblies a combined mass of 1,239 kg before the addition of weapons, ammunition, launchers, and other equipment. Their combined mass represents 4.3% of the chassis's rated weight capacity, although this percentage does not describe the proportion of the completed vehicle's combat weight. The additional roof-mounted equipment also affects weight distribution and imposes mechanical loads during braking, turning, and cross-country movement. No verified combat weight, power-to-weight ratio, axle-load distribution, or center-of-gravity measurement is available for the complete SGT Stout.

  The Stryker A1 modernization also increased electrical generation capacity through the installation of a 910 A alternator, replacing the earlier 570 A unit. The increase of 340 A represents a 59.6% improvement in rated current capacity, providing additional electrical power for mission equipment and vehicle systems. At a nominal voltage of 28 V, the two alternator ratings correspond to theoretical outputs of 15.96 kW and 25.48 kW, respectively, an increase of 9.52 kW. These calculations represent electrical output at the stated voltage and current rather than guaranteed continuous power available to the mission equipment under every engine operating condition. The SGT Stout's turret requires 0.25 kW when quiescent, 0.70 kW during scanning, and 3.20 kW during engagement, with a peak demand of 16 kW. Its four radar panels consume a combined 1.28 kW on average, excluding additional processing equipment. The complete electrical load also includes communications, displays, thermal imaging, identification equipment, vehicle electronics, and other auxiliary systems, whose combined consumption has not been established.

  The Stryker A1 retains an eight-wheel-drive configuration intended to provide road mobility and cross-country movement without relying on tracked propulsion. Its reinforced suspension is designed to accommodate the increased vehicle weight while preserving the mobility required by formations equipped with Stryker armored vehicles. The wider Stryker family has a maximum road speed of 60 mph (97 km/h), but this figure has not been independently verified for the fully equipped SGT Stout. The additional mass and external equipment may affect acceleration, braking, stability, and mobility under particular terrain conditions, although the available information does not quantify these effects. The SGT Stout is intended to accompany maneuver formations during movement and reposition between firing locations rather than operate exclusively from fixed defensive sites. Its wheeled configuration supports movement along road networks and deployment with other Stryker-equipped units, while its actual cross-country performance depends on terrain, ground conditions, vehicle loading, and maintenance.

  The DVH A1 also incorporates improvements to onboard vehicle management and crew situational awareness, including the In-Vehicle Network (IVN), Driver's Situational Awareness Display (DSAD), and Commander's Situational Awareness Display (CSAD). These systems provide vehicle information and support coordination between the driver, commander, and other crew members. They operate alongside the Leonardo DRS Mission Equipment Package, which has separate interfaces for surveillance, fire control, target identification, and weapon operation. The distinction is important because automotive mobility and weapon stabilization are separate capabilities: the vehicle can reposition with ground formations, while the remotely controlled turret can track and engage targets without requiring the driver to align the entire Stryker toward them. The turret supports engagements against moving targets while the vehicle is stationary or moving, subject to the stabilization and fire control limitations of the selected weapon. The precise relationship between vehicle speed, terrain conditions, and firing accuracy has not been quantified.

  The available information does not establish the SGT Stout's fuel capacity, operational driving range, maximum gradient, side-slope limit, fording depth, ground clearance, or turning radius. It also does not provide independently verified overall dimensions for the complete vehicle with its radar panels, missile launchers, and turret installed. Consequently, published dimensions and performance figures for other Stryker variants cannot be treated as confirmed measurements of the operational M1265A1 air defense vehicle. The 28,576 kg figure represents the chassis's rated weight capacity rather than the SGT Stout's measured combat weight, while the 97 km/h figure is a Stryker-family maximum road speed rather than a dedicated M-SHORAD test result. The established propulsion characteristics are the 450 hp Caterpillar C9 diesel engine, 8×8 drive configuration, reinforced DVH A1 chassis, upgraded suspension, and 910 A electrical generation system. These provide the automotive and electrical foundation for the SGT Stout's mobile air defense mission, although its complete vehicle-specific mobility envelope remains unverified.

The Moog RIwP is a modular remote-controlled turret designed to accommodate multiple combinations of automatic cannons, machine guns, missiles, surveillance equipment, and additional mission systems.