CMMG's Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension.
Specifications
- Type: Rifle
- Model: Barrel Sub-Assembly
- Finish: Nitride
- Length: 16.10"
- Twist: 1:7"
- Caliber or Gauge: 223 Remington/5.56 NATO
- Barrel Type: Carbine Length
- Barrel Features: M4 Profile
CMMG | MPN: 55DE10A | UPC: 815835014067