Description
The CMMG Mk4 is a semi-automatic AR-15 rifle chambered for 5.56x45mm. It features forged 7075-T6 aluminum M4 type upper and AR-15 type lower receivers nitrided 4140 chromium-molybdenum alloy steel M4 profile 16.1 threaded barrel RKM11 KeyMod free-float handguard single stage mil-spec style trigger and standard A2 compensator. This rifle sports an A2 pistol grip and M4 buttstock with six position m
