AR-15 5.56 7.5" stainless steel pistol barrel. Standard 1/2-28 thread for attaching a muzzle device.
- Made from 416 stainless steel hardened to 26-32 rc and stress relieved.
- 1-9 rh twist. 6 groove button rifled.
- Chambered in 5.56 nato (also accepts .223 rounds).
- .750"diameter under gas block.
- Comes with barrel extension and extension pin installed. This barrel also has the gas port hole pre-drilled. Barrel extension has the m4 feedramps.