Looking to build the ultimate 9mm pistol caliber carbine? We have you covered! Utilizing our Radial Delayed Blowback operating system, not only does this upper create one of the softest shooting 9mm PCCs with style that is unmistakably CMMG, this upper group is designed to work with a number of different lower receivers. From standard AR15 lowers (when used with AR 9 conversion mags) to any of our pistol magazine lowers (Mk9, MkGs, and Mk17), you can build your next PCC exactly how you imagine. Available in six different Cerakote finishes, all CMMG Upper Groups come complete with bolt carrier group and ZEROED accessories including :
