Personal defense calibers like 5.7x28mm have become a big thing in the last few years, and if you’re looking for PDW ballistics and the classic style and balance of a carbine then you’re in luck. Combine this RESOLUTE Upper Group with either our Mk57 Lower or a standard AR15 lower group and CMMG’s 5.7 AR Conversion Magazines and you’ll be ready to hit the range! Available in six different Cerakote finishes, all CMMG Upper Groups come complete with bolt carrier group and ZEROED accessories including :
ZEROED AR15 Polymer Dust Cover
ZEROED AR15 Ambi Charging Handle
ZEROED Muzzle Brake 5.56mm
Platform: Mk4, Mk57
Caliber: 5.7x28mm
Operating System: Radial Delayed Blowback
Barrel Length: 16.1
Barrel Twist: 1:9
Barrel Contour: MT
Barrel Material: 4140CM, SBN
Muzzle Device: CMMG ZEROED Muzzle Brake
Muzzle Thread: 1/2 x 28
Upper Receiver: Billet 6061 T6 Aluminum
Hand Guard: CMMG EML15 M-LOK
Finish: Cerakote Standard
Charging Handle: CMMG ZEROED Ambi
Weight: 4.0 lbs
Length: 25.3"
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