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Mfg Item #: 55ADF4E
Action: Semi Auto - Caliber: 5.56 - Barrel: 12.5 medium weight multi-role profile - Muzzle: A2 comp. threaded 1/2-28 - Hand Guard: CMMG RKM11 KeyMod hand guard - Furniture: Magpul MOE pistol grip - Receivers: Forged 7075-T6 AL M4 type upper AR15 type lower - Trigger: Single stage mil-spec style trigger - Weight: 6 lbs (unloaded) - Length: 29 (stock collapsed) - Gas Port Location: Carbine - The Mk4 K is CMMG's primary short barreled rifle. The Mk4 K includes the RKM11 KeyMod free floating hand guard. The barrel is a nitrided 4140 CrMo steel 12.5 barrel available in both 5.56x45mm and 300 AAC Blackout. Each rifle includes Magpul MOE pistol grip and trigger guard along with a magazine and CMMG's lifetime quality guarantee.
| Action | Semi Auto |
|---|---|
| Barrel | 12.5 medium weight multi |
| Length | 29 (stock collapsed) |
| Weight | 6 lbs (unloaded) |
| Caliber | 5.56 |
| Trigger | Single stage mil |