Tapco Conversion Glock 22 9mm Luger Threaded Pistol Barrel Black. An easy-to-install barrel simply just drop it in no gunsmith or other modifications are required. We recommend using Glock 17 magazines for reliable feeding. All threaded barrels also include a thread protector. Specifications for Tapco Conversion Glock 22 9mm Luger Threaded Pistol Barrel: Manufacturer: Tapco Color: Black Finish: Nitride Barrel Length: 4.49 in Threads per Inch: 1/2x28 Caliber: 9mm Luger Gun Make: Glock Gun Model: Glock 22 Gen 4 Glock 22 Gen 3 Weight: 0.35 lb Tapco TAP22018 Threaded Barrel 9mm Fits Glock 22 Gen3-4 Drop In Black Nitride S Tapco TAP22018: Conversion Glock 22 9mm Luger Threaded Pistol Barrel Black