Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. 16.1? Medium Taper Profile 4140 Chrome Moly Salt Bath Nitride Finish inside and out 1:7 Twist 5.56 45 NATO Chamber Threaded 1/2-28 Midlength gas port .750? Gas Journal
Specifications
- Caliber: 5.56mm
- Barrel Length: 16.1"
- Color: Black
- Barrel Type: Threaded
- Barrel Material: Steel
- Firearm Accessories Weapon Fit: AR-15
- Muzzle Thread: 1/2-28
- CA Prop 65 Chemical: Lead
- Barrel Twist Rate: 1:7
Cmmg Inc. | MPN: 55DC70A | UPC: 815835016153