This short post of from the Special Forces Association.

The Barrett XM109 is a prototype anti-materiel precision rifle, chambered for 25 × 59 mm grenade rounds and 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 (1.2 mi).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. The current status of the XM109 is not particularly clear, with no news of either cancellation or potential adoption.

The XM109, originally known as the Objective Sniper Weapon (OSW) and now called the Anti-Materiel Payload Rifle (AMPR), is a semi-automatic anti-materiel rifle, 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.

3 Comments

  1. Rocketguy says:

    You see that silver band on the HE fuze? That’s where the housing was machined down to make prototype fuzes on the line that makes them for the Apache’s LW30 cannon. There’s a good chance I built that fuze. I should have an inert souvenir practice round here somewhere.

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    1. Rocketguy says:

      Self correction:

      I started looking at the dates and some of my old stuff and I probably didn’t build any hardware for the rifle. The prototype rounds…or at least fuzes…I built would have been for the LW25 chain gun and the palletized weapon system.

      The fact that we were still modifying 30 mm parts is a good indicator that the HE rounds never saw anything like high rate production.

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  2. D.E. Watters says:

    The late Charlie Cutshaw wrote this up for “Small Arms Review” back when it was simply known as the “Payload Rifle.”

    https://www.smallarmsreview.com/display.article.cfm?idarticles=2260

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