USED Hitman Industries AR-15 5.56x45mm NATO M4 Rifle Barrel 14.5 inch 1-7 Twist Carbine Length Nitride Black 556C14.5M450B7 EDEMO1 Condition Like New. There are a few ways to rifle a barrel but here at hitman we prefer button rifling for accuracy....
USED Hitman Industries AR-15 5.56x45mm NATO M4 Rifle Barrel 14.5 inch 1-7 Twist Carbine Length Nitride Black 556C14.5M450B7 EDEMO1 Condition Like New. There are a few ways to rifle a barrel but here at hitman we prefer button rifling for accuracy....