Luth-ar 5.56mm 11.50″ Button Broached Black Phosphate Chrome Moly Vanadium Fits AR-15

Description

4150 Chrome Molly Vanadium 5.56 mm, button broached barrel. The barrel is threaded with a 1/2?28 thread pitch, a 1-7 RH twist rate with 6 lands and grooves and an M4 feed ramp. This barrel takes a .750 gas block.