PRIMARY WEAPON SYSTEMS MK107 MOD 1 UPPER 7.62X39 7.75 TRIAD30 M107UF011F

MK107 MOD 1-M Specs: - Operating System: PWS Long Stroke Piston System 3 setting Adjustable Gas Regulator - Caliber: 7.62x39 - Barrel Length: 7.75 - Gas System Length: Pistol - Barrel Twist Rate: 1:10 - Muzzle Velocity: 1944 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