Caliber/Gauge
5.7x28mm
Barrel Length
5"
Color
Black
Gaining more acceptance as the go to personal defense caliber for many shooters in recent years, 5.7x28mm has proven itself to be well suited for the job. With incredibly flat shooting performance and low recoil, 5.7x28 excels at closer ranges while still providing ideal penetration. Equipped with a 5" barrel, this is the most compact 5.7x28mm upper group CMMG offers. CMMG 5.7x28mm uppers are designed to work with CMMG Mk57 lowers or standard AR15/Mk4 lowers (when used with 5.7 AR Conversion Mags). 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 Linear Compensator 5.56mm
Platform: Mk4, Mk57
Caliber: 5.7x28mm
Operating System: Radial Delayed Blowback
Barrel Length: 5
Barrel Twist: 1:9
Barrel Contour: MT
Barrel Material: 4140CM, SBN
Muzzle Device: CMMG ZEROED Linear Compensator
Muzzle Thread: 1/2 x 28
Upper Receiver: Billet 6061 T6 Aluminum
Hand Guard: CMMG EML4 M-LOK
Finish: Cerakote Standard
Charging Handle: CMMG ZEROED Ambi
Weight: 2.5 lbs
Length: 13.8"
ZEROED AR15 Polymer Dust Cover
ZEROED AR15 Ambi Charging Handle
ZEROED Linear Compensator 5.56mm
Platform: Mk4, Mk57
Caliber: 5.7x28mm
Operating System: Radial Delayed Blowback
Barrel Length: 5
Barrel Twist: 1:9
Barrel Contour: MT
Barrel Material: 4140CM, SBN
Muzzle Device: CMMG ZEROED Linear Compensator
Muzzle Thread: 1/2 x 28
Upper Receiver: Billet 6061 T6 Aluminum
Hand Guard: CMMG EML4 M-LOK
Finish: Cerakote Standard
Charging Handle: CMMG ZEROED Ambi
Weight: 2.5 lbs
Length: 13.8"