Model: GLOCK 21 - Caliber: .45 ACP - Length: 5.2 - Twist: 1:16 RH - Thread: .578x28 - The only thing better than a normal pistol barrel is a threaded pistol barrel. All pistol silencers require one. We noticed a market need for high quality pistol barrels and we stepped in to offer them. - Holding to the same commitment to quality as all our products our threaded barrels are tough enough to hold up under the harshest conditions.
Determined at checkout.