Product Description The Lone Wolf Distributors AlphaWolf Barrel for Glock 22 and Glock 31 is an industry-leading conversion barrel engineered to deliver absolute accuracy and combat reliability. This precision-machined barrel converts your full-size G22 (.40 S&W) or G31 (.357 SIG) pistol to fire 9mm Luger, giving you caliber versatility with zero compromise on performance. Crafted from certified, stress-relieved 416 stainless steel and finished with an industry-recognized Salt Bath Nitride (SBN) coating similar to Tennifer, this barrel is heat treated to RC 40-42 with the SBN coating elevating surface hardness to RC 60. The button-rifled, three-stage honed bore ensures consistent, tight-tolerance performance, while the integrated fluting channels heat and debris away from the action. With exacting tolerances and a drop-in design, installation is straightforward across all Glock 22 and 31 generations 1 through 4. Proudly made in the USA. Product Highlights Caliber Conversion: Converts full-size Glock 22 (.40 S&W) and Glock 31 (.357 SIG) to chamber 9mm Luger for versatile, cost-effective shooting. Premium Steel Construction: Machined from certified, stress-relieved 416 stainless steel for exceptional strength, durability, and corrosion resistance. Advanced Surface Hardness: Heat treated to RC 40-42 and finished with Salt Bath Nitride (SBN) coating that boosts surface hardness to RC 60 for extended barrel life. Button-Rifled Bore: Three-stage honed bore with button rifling delivers superior accuracy with lead, plated, or jacketed ammunition. Drop-In Installation: Exacting tolerances allow for easy, tool-free drop-in installation on all Glock 22/31 Gen 1-4 pistols. Specs Brand: Lone Wolf Distributors Manufacturer Part Number (MPN): AW-229N UPC: 639737069419 Compatible Models: Glock 22, Glock 31 (Generations 1-4) Caliber Conversion: 9mm Luger (from .40 S&W / .357 SIG) Barrel Length: 4.49 in (114 mm) Barrel Profile: Standard Material: 416 Stainless Steel (Certified, Stress Relieved) Finish: Salt Bath Nitride (SBN) - Matte Black Surface Hardness: RC 60 (after SBN coating) Rifling: Button Rifled, Three Stage Honed Bore Fluting: Yes Ammunition Compatibility: Lead, Plated, or Jacketed Installation: Drop-In Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>