Barrett XM109
Barrett Firearms Manufacturing · Sniper Rifle · Prototype · 2004
Also known as: Objective Sniper Weapon, OSW, Anti-Materiel Payload Rifle, AMPR, XM109 Payload Rifle
Overview
The Barrett XM109 is a prototype semi-automatic anti-materiel sniper rifle chambered in 25x59mm. Originally developed as the Objective Sniper Weapon (OSW) and later styled the Anti-Materiel Payload Rifle (AMPR), it pairs the proven lower receiver of the Barrett M82/M107 .50 caliber platform with a redesigned upper assembly firing programmable 25mm airburst and armor-piercing grenade rounds. Intended to defeat light armor, materiel and personnel behind cover at extended ranges, it uses a short-recoil action, a five-round detachable box magazine, a large muzzle brake and a skeletal stock to manage the substantial recoil.
Specifications
| Weight (empty) | 15100 g (532.6 oz) |
| Overall Length | 1200 mm (47.24") |
| Barrel Length | 450 mm (17.72") |
| Action Type | Short Recoil |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Action |
| Magazine Capacity | 5 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 425 m/s (1394 fps) |
| Muzzle Energy | 12460 J (9190 ft·lbf) |
| Effective Range | 2000 m (2187 yd) |
| Maximum Range | 3600 m (3937 yd) |
| Barrel Rifling | Right Hand |
| Frame Material | Steel |
| Barrel Material | Steel |
| Stock Material | Aluminum |
| Finish | Phosphate |
Calibers
- 25x59mm · primary — also known as 25x59mm HEAB, 25mm OSW
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety
- Features: Skeleton Stock, Picatinny Rail, Folding Bipod, Muzzle Brake, Airburst Capable
Service history
Operators
- United States Army · as XM109
Production
Production years: 2004-present
Prototype only; roughly 10 prototype systems were scheduled for delivery in 2004 under the US anti-materiel rifle program. Never mass-produced.
Origin
Country of origin: United States
Designer: Barrett Firearms Manufacturing
Notes
Recoil energy exceeds 60 ft-lbf, requiring an aggressive muzzle brake and recoil-mitigating buffer. The 25x59mm cartridge is shared with the XM307 Advanced Crew Served Weapon program. The design never entered series production and remained a low-rate prototype.
Background
The XM109 grew out of US Special Operations Command Directive 70-2 (1992) and a 1994 Joint Operational Requirement for a heavy sniper rifle, conceived as a way to give a single rifleman the reach of an anti-materiel weapon and the terminal effect of a grenade launcher, with rounds optimized to penetrate over 1.5 inches of rolled homogeneous armor at 1,200 meters.