AR-15 5.56 16" stainless steel hbar barrel straight fluted features:
- Made from 416 stainless steel hardened to 26-32 rc and stress relieved. 1-9 rh twist.
- 5.56/.223 chamber
- Carbine gas system
- 1/2-28 thread for attaching a muzzle device
- .750"diameter under gas block
- Polished stainless steel extrerior
- Comes with barrel extension and extension pin installed. This barrel also has the gas port hole pre-drilled.
- Barrel extension has the m4 feedramps.