Barrett Unveils SRSS Grenade Launcher: A Modular Leap in Squad-Level Firepower
-
| Defense Systems Analyst
At the Association of the United States Army (AUSA) Annual Meeting 2025 in Washington D.C., Barrett Firearms unveiled its new Squad Rifle Support System (SRSS)—a semi-automatic grenade launcher platform aimed at revolutionizing infantry firepower. Designed for modularity and precision lethality at the squad level, the SRSS could significantly alter how U.S. ground forces engage threats in future conflicts.
SRSS Overview: A New Breed of Grenade Launcher
The Barrett SRSS is a shoulder-fired or tripod-mounted semi-automatic grenade launcher chambered for standard NATO 40×46 mm low-velocity grenades. It features a magazine-fed design—unlike traditional single-shot or belt-fed systems—and uses a short-stroke gas piston operating mechanism. The system was developed to provide rapid multi-shot capability with enhanced accuracy and reduced recoil for dismounted troops.
Key specifications include:
- Caliber: 40×46 mm LV (low velocity)
- Action: Semi-automatic, short-stroke gas piston
- Magazine: Detachable box magazine (capacity undisclosed)
- Weight: Estimated under 7 kg unloaded
- Length: Configurable; modular barrel and stock options
The weapon integrates MIL-STD-1913 Picatinny rails for optics and accessories and supports programmable airburst munitions if paired with compatible fire control systems (FCS). While not confirmed at launch, Barrett hinted at future integration with advanced targeting aids such as laser rangefinders and ballistic computers.
Tactical Role and Operational Rationale
The SRSS aims to fill a capability gap between traditional under-barrel grenade launchers like the M203/M320 and heavier crew-served systems such as the Mk19 automatic grenade launcher. It offers individual soldiers or small units a higher volume of accurate explosive fire without requiring vehicle support or tripod deployment.
This aligns with evolving U.S. Army doctrine emphasizing distributed operations and increased organic lethality at lower echelons. In urban warfare scenarios or complex terrain—where line-of-sight is limited—the ability to deliver multiple grenades rapidly can suppress enemy positions more effectively than single-shot solutions.
Modularity for Mission Adaptability
A standout feature of the SRSS is its modular architecture. The system allows for quick swapping of barrels, stocks, grips, and sighting systems depending on mission profile—whether close quarters urban combat or longer-range open terrain engagements.
This modularity also supports logistics simplification by enabling parts commonality across configurations. For example:
- A compact CQB variant with shorter barrel and collapsible stock for airborne units or special operations forces
- A stabilized tripod-mounted version for static defense or checkpoint overwatch roles
The flexibility mirrors trends seen in other next-gen squad weapons programs such as NGSW (Next Generation Squad Weapon), where adaptability is prioritized alongside raw performance metrics.
Comparison with Existing Systems
The SRSS enters a competitive field of infantry grenade launchers but distinguishes itself through its semi-auto action combined with magazine feed—rare among Western designs in this caliber class.
| System | Caliber | Action Type | Feed Mechanism |
|---|---|---|---|
| M320 GLM (U.S.) | 40×46 mm LV | Single-shot break action | Breech-loaded single round |
| M32A1 MSGL (Milkor) | 40×46 mm LV | Semi-auto revolver-style cylinder | Cylinder-fed (6 rounds) |
| Mk19 Mod III (U.S.) | 40×53 mm HV | Belt-fed automatic | Belt-fed from ammo box; vehicle/tripod mount only |
| Barrett SRSS (new) | 40×46 mm LV | Semi-auto gas piston | Detachable box magazine (estimated ≥5 rounds) |
This places the SRSS between the M320’s portability and Mk19’s sustained fire capability—offering a middle-ground solution optimized for dismounted squads needing both mobility and volume of fire.
Status of Development and Future Prospects
The prototype unveiled at AUSA appears to be in an advanced pre-production phase. While no formal procurement contract has been announced by U.S. DoD entities yet, Barrett has reportedly submitted data packages to Army Futures Command for evaluation under Soldier Lethality initiatives.
If adopted—even in limited quantities—the SRSS could serve as a force multiplier during distributed operations where rapid indirect fires are needed without reliance on artillery or UAV-delivered munitions.
The system may also appeal to allied special operations commands seeking lightweight yet potent explosive delivery tools that can be deployed without vehicle support—especially in jungle or mountain environments where traditional crew-served systems are impractical.
Ammunition Compatibility and Lethality Options
The use of standard NATO-spec low velocity grenades ensures compatibility with existing stockpiles including high-explosive dual purpose (HEDP), smoke, illumination, CS gas, thermobaric variants—and potentially programmable airburst rounds if paired with suitable FCS modules like those used on XM25 prototypes.
This opens up diverse engagement profiles including anti-personnel suppression behind cover, obscuration/screening maneuvers during assaults, crowd control in peacekeeping missions, and even limited anti-materiel effects against light vehicles or drones when using specialized warheads.
Potential Challenges Ahead for Fielding
The path to adoption may face hurdles including budget prioritization amid competing modernization programs such as NGSW-R/AR rollouts and loitering munition investments. Additionally, training pipelines would need adaptation given that most current infantry are only familiar with single-shot GLs like M203/M320.
Sustainment logistics—especially regarding proprietary magazines—and integration into existing squad loadouts will also need thorough testing under operational conditions before widespread fielding can occur.
A Glimpse into Future Infantry Firepower?
If successfully integrated into U.S. infantry doctrine, Barrett’s SRSS could mark a pivot point toward more autonomous squad-level indirect fires—bridging gaps between riflemen and heavy support assets while preserving mobility. Whether it becomes standard issue remains uncertain—but its debut signals growing interest in rethinking how explosive effects are delivered by dismounted troops on tomorrow’s battlefields.
