The PWS MK2 MOD 1-M .308 Winchester Upper Receivers feature the PWS long stroke piston system originally designed for the AR-15 platform. What makes a short gun run, makes a long gun accurate- that being said, the MK2 is among the most reliable and accurate in its category. The MK2 line features a free float MLOK handguard with fully forged upper receivers. Lightening cuts and an eliminated forward assist make the MK2 MOD 1-M line a lightweight yet solid feeling firearm. The MK216 MOD 1-M is ideal for shooters looking to suppress their .308. The FSC30 Compensator ensures muzzle control and stability with reduced felt recoil. The MK216 MOD 1-M has a 16.1" length barrel. M Mfg: Primary Weapons