Primary Weapons Systems was formed by firearm enthusiasts in 2008. Starting out by producing muzzle devices” we tested our compensators on all different types of rifles – from M4s to AK-47s. After using both styles of rifles in testing with high round counts” the difference in maintenance needed was both astounding. From that basic realization” the PWS long-stroke piston system was born; keeping the core values of the AR-15 design” while also lessening the need for maintenance in high-volume fire situations and adverse conditions. The Compound Rifle is a combination of a Mod 1 upper” with the Mk1 Mod 2 Lower.
Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator
Caliber: .223 Wylde
Barrel Length: 11.85″;Gas System Length: Carbine”
Barrel Twist Rate: 1:8
Muzzle Velocity: 2741 fps
Muzzle Device: PWS Triad 556
Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized
Handguard: PWS MLok 11.05 Handguard (1.7″ width, 2.25″ height)”
Charging Handle: Radian Raptor Ambidextrous Charging Handle
Lower Receiver: PWS ambidextrous MK1 MOD 2-M Multi-Caliber Lower, T6 7075 Forged, Anodized, AR-15 Compatible
Trigger: Mil-Spec Enhanced, PTFE Coated.
Trigger Pull Weight: 5.5 – 6.5 lbs.
Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount
Buffer: PWS Enhanced H2 Steel Body Buffer
Furniture: Bravo Company USA Buttstock and Pistol Grip
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