CMMG UPPER GROUP, RESOLUTE, MkGs, 40S&W, 16.1″

UPPER GROUP, RESOLUTE, MkGs, 40S&W, 16.1″

If you’re looking for the ultimate pistol caliber carbine chambering, don’t sleep on .40 S&W. This MkGs® RESOLUTE® Upper Group is designed to extract the full, hard-hitting performance of .40 S&W in a package that’s easy to shoot with style in a class of its own. Available in seven 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 45ACP

Radial Delayed Blowback™ Operating System

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.

All CMMG .40 S&W MkGs uppers are only designed for use with MkGs lowers. CMMG cannot guarantee function with other manufacturers’ lowers.

Lifetime Quality Guarantee

We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.