AR-15 5.56 20" nato stainless steel barrel bull fluted 1-8 twist. Chambered in 5.56 nato (also accepts .223 rounds).
- ONLY DIAMOND FLUTED BULL BARRELS AVAILABLE RIGHT NOW
- Made from 416 stainless steel hardened to 26-32 rc and stress relieved.
- 1-8 rh twist. 6 groove button rifled.
- .936" diameter under gas block.
- Target crowned
- Comes with barrel extension and extension pin installed. This barrel also has the gas port hole pre-drilled. Barrel extension has the m4 feedramps.