Primary Weapons Systems MK111 Mod-1M Upper, Fits AR15, 223 Wylde, 11.85" Barrel, Black Color, Anodized Finish, Primary Weapons M-Lok 6.9" Handguard

The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a more true to mil-spec design, the MK1 MOD 1-M line is a go-to for not only civilians, but also Law Enforcement. With fully forged receivers, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.

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• Barrel Length : 11.85"
• Caliber : 223 Wylde
• Color : Black
• Finish : Anodized
• Fit : AR-15
• Manufacturer Part # : MK1-M1U-223-11
• Model : MK1
• Subcategory : Complete Upper Receivers
• Type : Upper