Receivers

CMMG offers a variety of lower platforms that are optimized for use with our 9mm Radial Delayed Blowback uppers. The Mk17, being the latest iteration of pistol mag lower platforms, utilizes Sig Sauer P320/M17/M18 pattern magazines. Whether you already...

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...

Designed exclusively around the 7.62x39mm cartridge, this Mk47 BANSHEE pistol lower group is made to accept most AK47-style magazines. The Mk47 is CMMG's mid-size platform, utilizing beefier components and receivers than a standard AR15/Mk4 without the...

Created to combine the best attributes of 9mm and 45 ACP, .40 S&W has proven itself to be an incredibly capable round. Now anyone looking to build a powerful and ultra-compact .40 S&W personal defense weapon can in no time. Simply pair with a CMMG MkGs...

The S&W M&P15 stripped lower receiver is constructed of aircraft grade aluminum for environmental and hard duty use. Don't just settle with any name, settle with Smith & Wesson.

Not sure about an 8'' barrel but not quite up for the 16''? Well, you're in luck! At 12.5'' this Mk47 BANSHEE upper group is just the thing to scratch that 7.62x39mm itch. Built on the mid-size Mk47 platform, this upper group is designed to work with...

Lower Receiver Assembly, Mk57, Coyote Tan

Having more options is always better. The Mk17 platform is another evolution of CMMG's 9mm lineup. This BANSHEE pistol lower group gives shooters the ability to use any new or existing CMMG 9mm Radial Delayed Blowback upper and utilize Sig...

After more than a century of faithful use by shooters all over the world, 45 ACP is a cartridge that has proved itself time and time again. For those looking for a modern platform in a classic chambering, look no further than the BANSHEE MkG upper group...

Explore what's possible with 6.5 Creedmoor with the 24'' ENDEAVOR Mk3 Upper Group. Dedicated to long-range performance above all else, this upper utilizes a nitride-finished 416 stainless steel barrel to better harness the potential of 6.5 Creedmoor...

Long-range rifle builds dont have to be cumbersome, with a barrel length of 20'' this 6.5 Creedmoor ENDEAVOR Mk3 Upper Group balances maneuverability with the performance shooters have come to expect from the ENDEAVOR line. The CMMG Mk3 platform is based...

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...

Explore what's possible with 6.5 Creedmoor with the 24'' ENDEAVOR Mk3 Upper Group. Dedicated to long-range performance above all else, this upper utilizes a nitride-finished 416 stainless steel barrel to better harness the potential of 6.5 Creedmoor...

The Radian Model 1 Upper Receiver and Hand Guard are precision CNC machined as a matching set, structurally reinforced in critical areas for improved strength and rigidity. The upper receiver is cut from billet 7075-T6 aluminum and assembled with dust...

Designed from day one for the AR15 platform, 300BLK was made to utilize many of the most common AR components in existence. With the 12.5'' BANSHEE upper group you can build your next 300BLK AR with character like no other. Available in Cerakote...

Don't build a .22 LR that looks like an AR, build an AR that happens to be chambered in .22 LR. Equipped with a 4.5'' barrel, the shortest CMMG offers in any caliber, this BANSHEE upper group is built on the Mk4 platform, and is designed to work with any...