SilencerCo Glock 21 45 ACP 5.3" Threaded Barrel, Black Nitride - AC863

This is a replacement barrel for Glock 21 Gen3 and Gen4 pistols chambered in 45 ACP. The barrel features a threaded muzzle (.578x28 pattern) and is constructed from 416R stainless steel with a black nitride finish for durability and corrosion resistance. The 5.3" length and 1:16" right-hand twist rate provide reliable performance for standard and suppressed shooting applications.