16" 1x9 Nitrided LW Stripped Barrel.
Starting from 4140 steel alloy, the barrel is 6 groove button rifling with a 1-7 right-hand twist per military specifications. This process ensures a consistent and uniform bore. The chamber and bore is then nitride coated inside and out.
Chambered in 5.56x45mm NATO
Includes barrel extension with M4 feed ramps
OD at the gas journal is .625
Barrel weighs 1lb 8oz
Muzzle features 1/2-28 threads for attachment of a standard A2 flash hider, or the muzzle device of your choice. This particular barrel features a lightweight profile and a Carbine length gas system.