The Toxic series 5.56 / .223 barrel combines the durability and strength with the exceptionally corrosion resistant Seal Kote system. This provides not only an impressive barrel life but ensures excellent accuracy and an affordable price. Every Toxic Arms barrel will give sub MOA accuracy with match grade ammunition. This 16” 5.56 / .223 barrel is ready to accept your favorite .750” gas block. The barrel is threaded so it can accept a muzzle brake or your favorite suppressor.