CMMG Inc Upper MK4 K 5.56mm 12.5 with 11.5" Keymod Handguard Md: 55BDF19

CMMG Upper MK4 K 5.56mm 12.5 with 11.5" Keymod Handguard



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. The Mk4 K or Kurz (German for “short”) upper is our primary short barreled upper. The Mk4 K includes our RKM11 KeyMod free floating hand guard and a salt bath nitrided 4140 chrome-moly steel 12.5” barrel.



Specifications :

- Caliber: 5.56mm

- Barrel: 12.5? medium weight multi-role profile

- Muzzle: A2 comp., threaded 1/2-28

- Hand Guard: CMMG RKM11 KeyMod hand guard

- Receivers: Forged 7075-T6 AL M4 type upper

- Trigger: Single stage mil-spec style trigger

- Weight: 6 lbs (unloaded)

- Length: 29? (stock collapsed)

- Gas Port Location: Carbine



Manufacturer: CMMG

Model: 55BDF19

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