CMMG Complete Upper, Mk4 PDW, 22LR
The Mk4 PDW Upper Group is CMMGs smallest, most compact upper group equipped with the RKM7 KeyMod free floating hand guard and a nitrided 4140 CrMo steel barrel. This Upper Group is available in 300 BLK, 9mm Luger and 22LR; every Upper Group is covered by CMMGs lifetime quality guarantee.
ALL NFA RULES APPLY.
- Caliber: 22 long rifle
- Barrel: 9, 1:16 twist, medium taper profile, 4140CM, SBN
- Muzzle: A2 comp., threaded 1/2-28
- Hand Guard: CMMG RKM7 KeyMod hand guard
- Receiver: Forged 7075-T6 AL M4 type upper
Upper Group consists of:
- Upper Receiver Assembly (Upper Receiver, Ejection Port Cover, Forward Assist, Gas Deflector)
- Barrel Sub-Assembly
- Hand Guard and Barrel Nut
- Charging Handle
- Bolt Carrier Group
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