PRIMARY WEAPON SYSTEMS MK109 MOD 1 UPPER 300BLK 9.75 TRIAD30 M109UB011F

MK109 MOD 1-M Specs: - Operating System: PWS Long Stroke Piston System 3 setting Adjustable Gas Regulator - Caliber: .300BLK - Barrel Length: 9.75 - Gas System Length: Pistol - Barrel Twist Rate: 1:8 - Muzzle Velocity: 2216 fps - Muzzle Device: PWS Triad 30 - Upper Receiver: PWS Proprietary Piston Upper T6 7075 Forged Anodized - Handguard: PWS M-Lok 6.9 Handguard (1.7 width 2.25 height) - Charging Handle: Radian Raptor Ambidextrous Charging Handle Manufacturer Part Number: M109UB011F