AR-15 5.56 11.5" stainless steel bull barrel 1-9 twist. Chambered in 5.56 nato (also accepts .223 rounds).
- Made from 416 stainless steel hardened to 26-32 rc and stress relieved.
- 1-9 rh twist. 6 groove button rifled.
- Carbine length gas system .936"diameter under gas block.
- Target crowned muzzle.
- Comes as seen in picture with barrel extension and extension pin installed. This barrel also has the gas port hole pre-drilled. Barrel extension has the m4 feedramps.