Machined from 416R Gun Barrel Quality Stainless Steel, and finished in our in house aging oven to final dimension +/-0.003in, the GGP Match Glock 19 non-threaded barrel is the answer for the high end user who wants a match barrel without the issues of an inserted lead core barrel. The GGP Match Glock 19 non-threaded barrel will drop into any Glock frame with the barrel screw/pin removed. Due to a lack of a need for specialized parts, the GGP Match Glock 19 non-threaded barrel will fit many factory or aftermarket Glock frames with no visible or extra parts inside. The grey Ghost Precision match barrel will also allow the user to tap into the full potential of the Glock 19 platform. This can range from a ported or un-ported barrel with great internals, to a stripped or OEM Glock frame with added length or width. There are two different Gen 5 versions to chose from; one is compatible with Gen 3-4 or one is compatible with Gen 5. Specifications for Grey Ghost Precision Match Glock 19 Non-Threaded Pistol Barrel: Manufacturer: Grey Ghost Precision Color: Black Finish: Black Nitride Fabric/Material: 416R Stainless Steel Cartridge: 9mm Luger Gun Make: Glock Gun Model: Glock 19 Model Generation: 4, 3 Barrel Length: 4 in Threads per Inch: Non Threaded Barrel Twist Rate: 1-10 Flutes: Yes Weight: 5 oz Condition: New Caliber: .355 Caliber Features of Grey Ghost Precision Glock 19 Match Grade Pistol Barrel: 416R Gun Barrel Quality Stainless Steel  Match Grade drop in barrel Final dimension of +/- 0.003in for consistent accuracy SAAMI spec. 9mm Match chambers Proprietary twist rate Choose from Gen 3-4 or Gen 5 Optional Black Nitride Finish for durability without hindering performance Package Contents: Grey Ghost Precision Match Glock 19 Non-Threaded Pistol Barrel