Silencerco's threaded barrels for Glock handguns are made from 416R stainless steel and available with a black nitride or natural stainless steel finish. These fit both Gen 3 and Gen 4 Glocks. 9mm barrels have 1/2×28 threads, while the .45 ACP barrel has .578×28. Includes thread protector. Mfg: Silencerco
