The RESOLUTE 100 Series upper group features the proven and rugged furniture like the CMMG RML15 M-LOK handguard and accessories like a mil-spec charging handle and A2 flash hider. Chambered in 5.7x28mm, this upper group is ready for your next AR build.
5.7x28mm Radial Delayed Blowback upper groups are designed to work with either CMMG Mk57 lowers and FN Five-Seven magazines or Mk4/mil-spec AR15 lower receivers when using CMMG 5.7 conversion magazines.
All of our Upper Groups come complete with BCG.
All CMMG products come with our Lifetime Quality Guarantee.
TECHNICAL SPECIFICATIONS
PLATFORM | MK57 |
CALIBER | 5.7X28MM, 5.7X28MM (CONVERSION) |
OPERATING SYSTEM | RADIAL DELAYED BLOWBACK |
BARREL LENGTH | 16.1 |
BARREL TWIST | 1:9 |
BARREL CONTOUR | MT |
BARREL MATERIAL | 4140CM, SBN |
BARREL TWIST | 1:9 |
MUZZLE DEVICE | CMMG A2 COMPENSATOR |
MUZZLE THREAD | 1/2 X 28 |
GAS PORT LOCATION | N/A |
GAS BLOCK | N/A |
UPPER RECEIVER | FORGED 7075-T6 AL M4 TYPE UPPER |
HAND GUARD | CMMG RML15 M-LOK |
FINISH | HARD COAT ANODIZED RECEIVERS AND HAND GUARD (CAN BE UPGRADED TO CERAKOTE) |
CHARGING HANDLE | CMMG MIL-SPEC |
WEIGHT | 4.5 |
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