Description
Barrel Sub-Assembly, 16.1″ Bull 4140CM SBN, 5.56mm
Perfect for building your custom AR15 upper group, the Bull profile improves shot to shot consistency during long strings. Every barrel comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
Description:
- 16.1″
- Bull Profile
- 4140 Chrome Moly
- Salt Bath Nitride Finish inside and out
- 1:7 Twist
- 5.56×45 NATO Chamber
- Mid length gas port
- .936″ Gas Journal