RESOLUTE®, Mk57™, 5.7X28MM, 16.1”
Quickly becoming a fan favorite over the last several years,
5.7x28mm has found favor with those looking for a fast, lightweight
round that offers excellent penetration at short ranges with
minimal recoil.
The CMMG® Mk57™ platform is designed exclusively to accept
FN® Five-seveN™* style magazines without sacrificing essential
AR functionality, like last round bolt hold open. Not only can you
have the same round in your pistol and carbine, but you can also
use the same magazines for both!
Radial Delayed Blowback™
Originally developed for the .45 ACP MkG platform, CMMG has
adapted our Radial Delayed Blowback system across our pistol
caliber lineup to create pistols and rifles with a softer recoil
impulse and reduced bolt weight compared to traditional straight
blowback systems. Check out our CMMG Resources article & video
to learn more about what sets Radial Delayed Blowback apart.
ZEROED™ parts and accessories:
• ZEROED Pistol Grip
• ZEROED 60°/90° Ambi Safety
• ZEROED AR15 Ambi Charging Handle
• ZEROED AR15 Bolt Catch
• ZEROED AR15 Polymer Dust Cover
• ZEROED Muzzle Brake 5.56mm
*Five-seveN is a registered trademark of FN Herstal.

GENERAL PRODUCT SPECIFICATIONS