Spikes Tactical 5.56mm NATO AR/M4 Rifle Barrel - 16in - Black - The barrel is one of the most critical components of your build. Spikes Tactical offer high quality barrels so you can be confident that your rifle will be off to a good start with which ever barrel you decide on. MIL-B-11595E CMV Chrome Lined 1/7 Twist Rate 1/2 X 28 Thread Pitch for Muzzle 5.56 Nato Chamber .750 Gas Block Seat M4 Feed Ramped Barrel Extension MilSpec Phosphate Coating Midlength Gas
