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RSR Part #: PWS19-PM111UA0B Manufacturer Part #: 19-PM111UA0B

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Primary Weapons Systems, MK111 Pro Upper, 223 Wylde, 556NATO, 11.85" Barrel, PWS 11" MLOK Handguard, Radian Raptor Charging Handle, Black Finish


  • Operating System: PWS Long Stroke Piston System, 3-Setting Adjustable Gas System
  • Caliber: .223 Wylde
  • Barrel Length: 11.85"
  • PWS free float Mlok(TM)11" Handguard
  • PWS Proprietary Piston Upper, 6061 extrusion, Anodized
  • Radian Raptor(TM)Charging Handle

Product Description

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.