AR-15 16" M4 Barrel, 5.56 NATO, 1:8 Twist, Parkerized

Premium Grade Parkerized AR-15 Rifle Barrel, 16" Contour M4 Barrel, 1 in 8 twist. Gas port drilled for carbine length gas setup, and threaded for a compensator. Barrel Extension in rear with M4 feed ramps, drilled with a .070 gas port diameter at carbine length. It has a .750 gas block diameter ready to install into receiver. This barrel is marked as being chambered 5.56 NATO - Set up for carbine length handguards. These barrels are made from 4150 Chrome Moly Vanadium. They are not chrome lined. Threaded 1/2x28. Gas system Carbine. Weight 1.90 lbs.