The CMMG 5" 5.7x28mm Barrel and BCG Kit is designed to build an AR pistol or SBR with less felt recoil thanks to its Radial Delayed Blowback system. It fits AR Rifles and is ideal for either a CMMG Mk57 or Mk4/AR15 mil-spec lower receiver, boasting a sleek black color.
Specs
| Model No. | CMMG57DBC33 |
| Manufacturer | CMMG |
| Color | Black |
| Caliber | 5.7X28MM |
| Barrel Length | 5 |
