Is it about time to replace the worn-out barrel on your Colt LE6920 AR-15? Maybe you're just looking to build a custom rifle and want a Colt-pattern barrel? Whatever the case, Colt now offers its factory-produced LE6920 AR-15 replacement barrels, so you can get the exact same barrel that's put on Colt's factory guns. Each Colt LE6920 Replacement Barrel features six-groove rifling with a 1:7-inch rate of twist. The barrels include M4-style feed ramps and have a chrome lining that prevents corrosion. Each barrel is set up for a carbine-length gas system and features 1/2""-28 TPI threading at the muzzle. Colt's LE6920 Replacement barrels are available in 16-inch lengths and can be had as a stripped barrel, complete with barrel extension, or as an assembly that includes a barrel nut, front-sight tower, post and sling swivel.