Description
MK111 Pro Upper Features 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. MK111 Pro Upper Specifications Manufacturer: Primary Weapons Systems Manufacturer Part #: 19-PM111UA0B Model: MK111 Pro Upper Type: Upper Caliber: 223 Wylde Caliber: 556NATO Barrel Length: 11.85″ Color: Black Description: MLOK Fit: AR-15
