PWS Mk109 Mod 2-M Upper 300 AAC 9.75 AR-15 Piston

The PWS Mk109 Mod 2-M upper in 300 AAC Blackout delivers a compact, hard-hitting AR-15 platform upgrade built around a pistol-length long-stroke piston system with a three-setting adjustable gas regulator for reliable operation across diverse ammo and suppressor use, paired with a 9.75" barrel and a 1:8 twist to stabilize heavier subsonics and standard loads alike. Its anodized black M-LOK handguard, the PWS PicLok 8.9 rail, provides enduring strength and flexible accessory mounting, while the PWS proprietary Piston Upper T6 7075 forged receiver ensures rigidity and durability in demanding field conditions. Aimed with precision, the Triad 30 muzzle device balances recoil and noise reduction, and the included Radian Raptor ambidextrous charging handle supports smooth, fast cycling from any shooting position. This complete upper is designed for AR-15 platforms seeking reliable performance, enhanced heat management, and consistent velocity, with a muzzle velocity around 2264 fps and an integral, low-profile profile that supports quick-handling and excellent handguard compatibility. Ideal for hunting, target shooting, and tactical scenarios, the Mk109 Mod 2-M blends rugged build quality with practical versatility for serious shooters.