Receivers

This complete kit will convert any MIL-SPEC AR-15/M4 Lower into the top-performing MCX-SPEAR LT.

Chambered in one of the most iconic calibers with over a century of faithful use, the 5'' BANSHEE MkG upper group in 45 ACP is the shortest MkG upper CMMG offers. Ready to pair out of the box with an existing or new MkG lower group, this upper is the...

Start your 7.62x39mm build off right. The CMMG Mk47 mid-size platform was designed around the famous Soviet-era cartridge to address the common concerns of 7.62x39mm AR15s. This Mk47 RESOLUTE lower group accepts most conventional AK47 pattern magazines...

300BLK has proven itself to be an incredibly capable round in a variety of applications, from close quarters to mid-range and ammo loadings optimized for subsonic/suppressed as well as supersonic, there is use for almost every need. Whether you're...

Dark Storm Industries Patented DS-15 Stripped Fixed Magazine Lower Receiver.

For those looking to reach out further with 5.56mm, the ENDEAVOR Mk4 Upper Group is here. Perfect for new builds or for use with an existing AR15 lower receiver, this upper utilizes an 18'' 416 stainless steel barrel with a nitride finish for enhanced...

The Geissele Super Duty MOD1 Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 14.5'' complete upper chambered in 5.56mm features a nanoweapon-coated HUXWRX Flash Hider-QD muzzle device mounted...

.625 Gas Block Diameter. M4 feedramps. Mid-Length Direct Impingement Gas System. Combat Series M-LOK Handguard. MI A2 Flash Hider.

Striking the balance between long-range performance and maneuverability, this 20'' ENDEAVOR Mk3 Upper Group in .308 WIN can pack a punch up close and at extended distances. The CMMG Mk3 platform is based on the popular LR-308/DPMS Gen 1 High-Pattern...

UPPER, SIGM400, 5.56 NATO, 16IN, PRO

RADIAN BUILDER KIT

Built with the same attention to detail you would come to expect from CMMG, this RESOLUTE Mk3 lower group based on the DPMS Gen 1 high-pattern design, giving shooters the most popular and widely supported AR10 style platform. Shooters that prefer...

With over a century of service across the world, .45 ACP has been the pistol caliber of choice for many shooters. For anyone looking to complete the ultimate pistol caliber carbine, the RESOLUTE Upper Group chambered in .45 ACP is here. Available in...

Pair this 12.5'' 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like ballistic performance. Available in different Cerakote finishes, all...

As the original 9mm platform from CMMG, the Mk9 has evolved over time with improvements like Radial Delayed Blowback to provide shooters a platform with less felt recoil and a lighter BCG. Designed to accept Colt-style 9mm SMG magazines, this RESOLUTE...

Designed for use with CMMG .45 ACP MkG uppers, the MkG lower group accepts Glock-pattern magazines while still delivering essential AR15 features and function like last round bolt hold open. Available in different Cerakote finishes, RESOLUTE MkGs lowers...