- Description
5.56 NATO Appoved US Government Approved Contractor Barrel
5.56 NATO Chambered, 16.1 inch, phosphate treated 4150 Gun Barrel steel, 1/2 x 28 TPI, 1:8 twist, accepts M4 feed ramps, carbine length gas system. Mid length gas system, dimpled to assist in the location of the gas block (.750 diameter) Manfactured by approved US Government contractor. 1 lb. 14 oz