Luth-AR 11.5" Barrel 5.56MM Barrel 223 Remington 556NATO 11.5" Black 1:9

Luth-AR 11.5" Barrel 5.56MM Barrel 223 Remington 556NATO 11.5" Black 1:94150 Chrome Molly Vanadium 5.56 mm, button broached barrel. The barrel is threaded with a 1/2A-28 thread pitch, a 1-9 RH twist rate with 6 lands and grooves and an M4 feed ramp. This barrel takes a .750 gas block.The 11.5a ^2 Lightweight Barrel 1-9 CM 4150 - 5.56 mm - Government profileAvailable in 11.5a ^25.56 mm4150 Chrome Molly VanadiumThreaded Barrel - Thread Pitch 1/2 x 28Gas Block Diameter .750Gas Tube Length - Carbine1-9 RH Barrel Twist6 Lands and GrovesM4 Feed RampGovernment profileButton BroachedWeight 1 lb 6 oz*All NFA regulations apply.SKU: BL-11