Add this Barrel Assembly to your Multi-Caliber system collection to be able to shoot the 300 Blackout. A highly accurate 16” medium profile barrel, rifled 1 turn in 7” – type 5R, its chrome lining will give years of service. Machined from 4150M Chrome Moly Vanadium 11595E steel with a black phosphate finish. Assembly includes A2 Birdcage type flash hider; railed gas block with bayonet lug and sling swivel, and gas tube. Completely assembled and ready for 300 Blackout Caliber use in the Multi-Caliber system. Made in the USA.