Serbia unveils modernized OSA 2 launcher with guided anti-tank round at Partner 2025.

Serbia showed the modernized 90mm OSA 2 man-portable rocket launcher at the Partner 2025, featuring a lighter tube, new sights and a fire-control computer. The upgrade matters for units seeking reusable, modular anti-armor firepower at lower cost than full missile systems, with a guided rocket option for standoff shots.

According to information gathered by Army Recognition on September 25, 2025, the modernized 90 mm OSA 2 man-portable rocket launcher was shown on the Partner 2025 floor in Belgrade. It is compact, with a shortened launch tube, an updated sighting unit, and a boxy fire control module over the grip. The OSA line is familiar across the region, yet this upgrade changes the conversation by pairing a reusable launcher with multiple rocket families, including a guided anti-tank round.
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Modernized 90 mm OSA 2 reusable launcher, 12–14.8 kg, with onboard ballistic computer, laser rangefinder and day/night sight; fires SATR, CR, TBR and guided GATR rounds and is UGV/drone compatible (Picture source: Army Recognition Group).

The OSA 2 stays centered on a 90 mm caliber. Total system mass sits between 12 and 14.8 kilograms, depending on optics and rocket container. Length varies from about 1.2 meters for the bare launcher to roughly 1.65 to 1.8 meters when a rocket container is attached. Those numbers matter for infantry who have to carry it through buildings or climb in and out of light vehicles. The tube has a new ergonomic support under the forward section and a pistol grip with a simple trigger block.

The heart of the refresh is the onboard ballistic computer. A day and night sight paired with a laser range finder is listed, with the computer taking that range data to generate a corrected aiming point. The optic head shown on the sample unit is a compact rectangular box with an eyepiece, clearly designed for quick attachment and zeroing. For older unguided anti-tank rockets, this kind of simple fire control can raise first-round hit odds, especially past the short urban distances where many shoulder weapons live. The manufacturer's literature also points to compatibility with several ammunition families. Standard anti-tank rockets carry the SATR label. A combined action CR round offers multi-purpose effects against light armor or material targets. A TBR thermobaric rocket gives the usual heavy overpressure choice for rooms, bunkers, or dug-in troops.

What stands out is the GATR option, described as a guided anti-tank rocket. That wording suggests the system can move into the space usually held by lightweight disposable missiles, at a fraction of the cost of a full command launch unit missile package. The launcher itself remains multiple-use. The rockets arrive in attachable containers that lock onto the tube and make the weapon ready without the clumsy field loading that costs time under fire. From a user perspective, it is the kind of modularity infantry units prefer. Train on one tube, carry the rounds needed for the day, and add the guidance only when the target set demands it.

The OSA 2 is more than a shoulder weapon in isolation: there is compatibility with the Milos unmanned ground vehicle and the Obad combat drone family. In practice, that opens several ways to fight. A Milos UGV with an OSA 2 pod can sit at a corner and cover a street without exposing a soldier. A drone configured as a ground or perimeter asset could carry spare containers as a forward resupply node. Serbia has been eager to show teamable ground systems at Partner events and this launcher fits right into that message. The interface appears straightforward, which usually means remote trigger and cueing via the same fire control module.

The system addresses the two constant problems of platoon-level anti-armor. First is the need to stop or at least deter heavier vehicles without hauling around a complex missile unit. Second is the need to break into defended spaces quickly. A 90 mm thermobaric round from a reusable tube is a practical answer for both. Urban operations drive much of today’s training. A two-person team can move the OSA 2 up a stairwell, range a firing slit with the laser, and put a TBR round into the room to overwhelm defenders. Against armor, the unguided SATR round gives a short-range punch for ambush shots from the side or rear. Where a standoff is needed, the guided GATR fills the gap without pulling Javelin-class systems away from higher priority sectors.

The OSA 2 will also find a place as a vehicle support weapon. Light armored patrols in the Balkans or Africa often run into a mix of threats that is impossible to predict. A pair of rocket containers strapped inside a 4x4 gives the crew a way to knock out a pickup with a heavy gun or punch through a breach in a compound wall. Reusability matters here. Crews can fire, retain the launcher, and restock containers at the next stop.

Serbia’s defense industry, with Yugoimport as a leading exporter, has steadily pushed upgrades of legacy designs that are familiar to many operators while adding just enough new technology to make them competitive. The wars of the last few years have revived demand for simple anti-armor solutions that can be bought in numbers. Countries balancing relationships between NATO, the European Union, and partners outside the Western orbit also look for equipment that does not lock them into a single supply chain. A modernized OSA family fits that bill; it draws on decades of M79 service history yet offers options like guided rockets and unmanned teaming that are current. For governments facing tight funds and complex politics, that combination is attractive.