This accurate Windham Weaponry Barrel is chambered in the unique .300 Blackout Caliber. It is 16” in length, and turned in a medium profile. It includes the Barrel Extension, Standard Barrel Nut, Round Front Handguard Cap, a Mil Std 1913 Railed Sight Base with Sling Swivel. Its muzzle is threaded 5/8” x 24 T.P.I. to accept a variety of flash hiders or muzzle brakes, and is finished with an 11 degree target crown to enhance accuracy. Machined from 4150 Chrome Moly Vanadium 11595E Steel, this quality barrel is Chrome Lined in both Bore and Chamber for long wear and ease of cleaning. A Black Manganese Phosphate finish offers protection against rust and corrosion. Rifling is 1 turn in 7 inches – right hand twist – with 5 lands & grooves in the “5R” style of rifling – for optimum accuracy with .300 Blackout ammunition. No Bayonet Lug
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