Primary Weapons Systems MK111 Pro Upper, 223 Wylde, 556NATO, 11.85

The MK111 PRO Upper features the PWS long stroke piston system. Internally this line offers the tried and true system. Featuring a free-float MLOK handguard with the fully forged upper. The MK111 Pro is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.

FEATURES:

• Operating System: PWS Long Stroke Piston System, 3-Setting Adjustable Gas System
• Caliber: .223 Wylde
• Barrel Length: 11.85
• PWS free float Mlokâ„¢11 Handguard
• PWS Proprietary Piston Upper, 6061 extrusion, Anodized
• Radian Raptorâ„¢Charging Handle