AR-15 5.56 16" stainless steel heavy (hbar) barrel

AR-15 5.56 16" stainless steel heavy (hbar) barrel. 1-9 rh twist. 6 groove button rifled.

• Made from 416 stainless steel hardened to 26-32 rc and stress relieved.
• Chambered in 5.56 nato (also accepts .223 rounds).
• .750" diameter under gas block.
• Carbine gas system
• 1/2-28 standard threaded muzzle end to accept muzzle brakes/compensators.
• 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.