Barrett XM109
The Barrett XM109, originally known as the Objective Sniper Weapon (OSW) and now called the Anti-Materiel Payload Rifle (AMPR), is a prototype semi-automatic grenade launcher. It is chambered for 25 × 59 mm grenade rounds and was developed by Barrett Firearms Manufacturing. It was designed in accordance with a requirement set out in 1994, and is capable of defeating light armor and equipment out to 2 km.
Also recorded as Barrett XM109 "Payload" · RYTEC AMR
Barrett XM109

Neil Lee / ARDEC · Public domain
- Name
- Barrett XM109 AMPR
- Field
- anti-materiel rifle
- Region
- United States
VALÉORINE Encyclopedia
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Documentary summary
The Barrett XM109, originally known as the Objective Sniper Weapon (OSW) and now called the Anti-Materiel Payload Rifle (AMPR), is a prototype semi-automatic grenade launcher. It is chambered for 25 × 59 mm grenade rounds and was developed by Barrett Firearms Manufacturing. It was designed in accordance with a requirement set out in 1994, and is capable of defeating light armor and equipment out to 2 km.
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Authority files
wikidata · Q808903 · wikipedia · Barrett XM109
In this article
Key facts
Key facts
• Name — Barrett XM109 AMPR • Origin — United States • Type — Direct-fire grenade launcher • Is Ranged — yes • Designer — Ronnie Barrett • Manufacturer — Barrett Firearms Manufacturing • Weight — 33.2 lbs • Length — 46 in • Part Length — 17.6 in • Cartridge — 25 × 59 mm • Caliber — 25mm • Action — Semi-automatic, short recoil • Range — 2000 m • Max Range — 3600 m • Feed — 5-round detachable box magazine
History
History
Prototypes of the XM109 have existed since the late 1990s and studies of the weapon's effectiveness were released in 2002; 10 prototypes were known to exist in 2004, and the XM109 and Barrett XM500 were folded into a broader Anti-Material Rifle Congressional Program in 2006. As of April 2026, status of the XM109 is not clear, with no news of either cancellation or potential adoption.
Overview
Overview
The XM109, originally known as the Objective Sniper Weapon (OSW) and now called the Anti-Materiel Payload Rifle (AMPR), is a semi-automatic grenade launcher, designed primarily for engagement of light armored vehicles and similar targets. The design uses the lower receiver from an M82/M107, but with a new upper receiver chambered in 25mm. The upper receiver of the M82 rifles can be replaced with an XM109 upper receiver to form a fully functional XM109 rifle. • Illustration — 25 mm rounds for the XM109: XM1050 TP and XM1049 HEDP The 25 × 59 mm round that is used in the XM109 is the same one originally developed for the cancelled XM307, product of the Objective (later Advanced) Crew Served Weapon program (OCSW / ACSW). As with the XM307, the XM109 can be reconfigured back to.50 BMG, in the XM109's case this is done by swapping the 25mm upper receiver for a standard M82 / M107 upper. The XM109 offers greater range and a shorter overall length than the previous M82/M107 systems, as well as potentially greater power in the 25 × 59 mm cartridge over even the Mk 211.50 BMG cartridge (AKA "Raufoss round"). However, the small amount of propellant and heavy projectile resulted in unacceptably high recoil due to limiting the effects of the weapon's muzzle brake, with a recoil force of over 60 foot-pounds compared to 36 for the M107. As of 2004, one of the project goals was to reduce the weapon's recoil.
Features
Features
• Picatinny rail • BORS ballistic computer • Monopod socket • Dual-chamber detachable muzzle brake or suppressor system • Detachable bipod and carry handle
In popular culture
In popular culture
• Mentioned in Person of Interest S4E6 as a "State-of-the-art next-generation weapon" that uses "high explosive" rounds that could "wreak havoc on the city [of New York]".
Places
Named by the record
Places
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- United States
Named but not plotted · 1
Barrett XM109 is associated with United States.
Country
Primary material
Documents and archives
reference work
- “Barrett XM109”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
- Wikidata, structured authority record Q808903: Barrett XM109
Unverified · Wikidata
Citations
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reference work
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Unverified
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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6,095 published records in this field, each with its sources named.
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