ArmaLite's barrels are custom-made for extreme accuracy and long life. This complete barrel assembly includes a full front sight housing, gas tube and Shim Spacer.
.750 at the Journal (Under the gas block)
Model: A2 Stainless Steel Rifle
Caliber: .223/5.56 X 45 mm
Barrel: 20" Triple Lapped, AISI 416R Stainless Steel, Match, M-4 Feed Ramps
Rifling Twist: RH 1:8"
Muzzle Device: Flash Suppressor
Front Sight Base: A2 Front Sight Assembly