CMMG now uses +0.002" Head Space gauges which is the new industry standard. Customers trying to use standard gauges will find they do not check correctly.
The Mk4 T or Tactical Upper sets itself apart being equipped with the new RKM11 KeyMod free floating hand guard, a lightweight, low profile alternative to quad rails with even greater modularity. Available with a bead blasted matte finish, 416 stainless steel, 16” barrel and A2 compensator.
Caliber: 300 BLK
Barrel: 16” medium weight tapered profile Bead Blasted 416 SS 1:7”
Muzzle: A 2 comp., threaded 5/8-24(300 BLK)
Hand Guard: CMMG RKM11 KeyMod hand guard
Upper Rcvr: Forged 7075 T-6 AL M4 type
***SPECIAL ORDER ****