U.S. Army Secures M777A2 155mm Cannon Tubes in $145.8M Deal to Sustain Combat Firepower.

The U.S. Army awarded BAE Systems a $145.83 million contract to produce M776 155mm cannon tubes for the M777A2 howitzer.

The award increases the contract’s total value to $462.77 million, with production running through March 31, 2031, under Army Contracting Command in Newark. The M776 tube forms the pressure-bearing core of the M777A2 howitzer, governing ballistic consistency, safe firing rates, and service life under operational tempo. The contract ensures the continued availability of a component that degrades fastest in high-use artillery systems, especially under modern high-charge firing conditions.

Read also: BAE Systems Showcases M777A2 155mm Howitzer Successfully Used in Ukraine at Eurosatory 2024.

U.S. Army awarded BAE Systems a $145.83 million contract to produce 155mm M776 cannon tubes for the M777A2 howitzer, reinforcing the service's effort to sustain lightweight artillery firepower, accuracy, and readiness as it modernizes its broader 155mm force (Picture source: U.S. DoW).

The contract’s cumulative face value now stands at $462.77 million, with work to run through March 31, 2031; funding and work locations will be assigned by order, and the Army Contracting Command in Newark is managing the effort. That matters because the cannon tube is not a minor spare: it is the pressure-bearing core of the weapon, the part that most directly governs ballistic consistency, service life, and safe firing at operational tempo.

The M777A2 remains a highly relevant armament even if it is no longer the Army’s answer to every range problem. The lightweight 155mm system fires standard rounds to about 24.7 km, rocket-assisted projectiles to roughly 30 km, and Excalibur precision munitions to about 40 km; it delivers a maximum rate of fire of four rounds per minute and a sustained rate of two. Its digital fire-control architecture gives the gun self-locating, self-laying capability, onboard ballistic calculations, digital communications, inertial navigation with GPS backup, and roughly 1-mil pointing accuracy, capabilities that turn a towed gun into a fast-reacting precision fires node rather than just a manual artillery piece.

The M776 tube is especially important because the U.S. has already learned that barrel technology, not just software or ammunition, determines how much combat value can be extracted from the M777A2. Army testing and field evaluations of full-bore chrome tube variants showed better resistance to hardened down-bore residue when firing higher-charge propelling increments, and Army reporting said chrome plating could increase tube life by nearly 50 percent while easing maintenance. In practical terms, that means more rounds fired before replacement, less downtime for inspection and cleaning, and better preservation of accuracy under heavy training or combat-style use.

That is precisely why the U.S. needs these tubes. A howitzer fleet can have working digital fire control, precision ammunition, and trained crews, yet still lose combat value if the barrels are worn, maintenance-intensive, or unavailable in sufficient numbers. The strategic logic has become sharper since Washington committed 108 M777 howitzers to Ukraine in 2022 and then moved to restart production of major M777 structures in 2024 and 2025, signaling that the system remains relevant not only as legacy equipment but as a weapon family that must be sustained, recapitalized, and industrially protected.

The Army’s own budget documents show that tube production is part of a broader attempt to prevent the M777 from drifting into obsolescence through neglect. Fiscal 2026 funding for M777 modifications continues digital fire-control upgrades, including software-defined radios, mission computers, displays, and assured PNT components, while BAE’s separate major-structure contract is rebuilding the manufacturing base for the gun itself. Read alongside earlier reporting on the M777 structure restart and M777 digital modernization, this new tube award looks less like routine sustainment and more like a deliberate effort to keep a viable 155mm towed artillery line alive.

The contrast with the canceled Extended Range Cannon Artillery program is instructive. In 2024, the Army scrapped the 58-caliber ERCA/M1299 prototyping effort after engineering problems, including excessive gun-tube wear, prevented a straight transition to production. Yet the service did not walk away from the need for greater standoff: XM1155 extended-range artillery projectile work continues, with Army officials explicitly framing it as a way to push 155mm fires farther and keep U.S. gunners outside enemy reach. The lesson is clear: future range matters, but barrel durability still decides whether advanced fire concepts survive contact with real use.

At the heavier end of the force, the Army is still funding the M109A7 Paladin Integrated Management program, with $250.238 million requested in FY2026 for 10 systems, while the service is also moving toward a wheeled 155mm replacement path for some M777 users in Stryker formations. That means Washington is now running three artillery tracks at once: sustain the M777, continue Paladin fielding, and search for a more survivable future gun. In that context, buying tubes is not backward-looking; it is what prevents a capability gap while new solutions remain unfinished.

The deeper significance of this award is industrial as much as tactical. The United States is rediscovering that tube artillery readiness is built not only by buying shells or announcing next-generation concepts, but by preserving the metallurgy, machining, barrel-life engineering, and production cadence that keep guns credible in the field. The M777A2 will not solve the Army’s range deficit against every peer system, but without fresh M776 tubes, the U.S. risks degrading one of the few 155mm platforms it can rapidly deploy with light forces, Marines, and allies. Taking care of the howitzers starts with taking care of the tubes.