16" 5.56 M4 Barrel (1/7 twist)
16" 5.56 M4 Barrel (1/7 twist), The 16" 5.56 NATO 1/7 twist barrel has a military M4 profile. The barrel extension is pre-installed and headspaced. Specs Caliber: 5.56 NATO | .223 Length: 16" Diameter at the gas port: .750" Barrel Threading: 1/2x28 Barrel Profile: Government Profile Barrel Material: 4150 Chrome Moly Vanadium Twist Rate: 1/7 Bore & Barrel Lining: Mil-spec Chrome Lined Barrel Coating: Manganese phosphate Gas System: Carbine length direct impingement SKU: STAG400011 FAQ Q: Will this work with my upper receiver? A: The barrel will work with any mil-spec upper receiver. Q: Do you provide instructions on how to install the barrel? A: Unfortunately we don't provide directions on how to install a barrel and recommend that it be installed by a gunsmith to prevent damage to the rifle. Q: Do I have to purchase a matched bolt to my barrel? A: With AR-15's as long as you are using the proper bolt for the caliber you do not need to match a bolt to the barrel.