CMMG 55DE10A 5.56mm M4 16'' Barrel Sub-Assembly

Perfect for building your custom dedicated 22LR AR15 upper group.

Perfect for building your custom Mk3/High Pattern LR-308 upper group. Comes with a properly installed barrel extension. All barrel sub-assemblies are properly headspaced.

Accuracy matters with any build, and with this 16.1'' Barrel chambered in .350 Legend there's no need to worry. Made from 4140CM steel with a nitride finish for superior durability. Works with the...

As CMMG's oldest 9mm platform, the Mk9 is continuing to go through changes to become even better than before. Introducing, the new and improved Mk9, now utilizing CMMG's patented Radial Delayed...

As CMMG's oldest 9mm platform, the Mk9 is continuing to go through changes to become even better than before. Introducing, the new and improved Mk9, now utilizing CMMG's patented Radial Delayed...