Swenson Glock 23 Conversion Barrels are precision machined from stainless steel for wear and corrosion resistance. These barrels are designed for improved accuracy, while still allowing for a drop-in fit. Reloading for your Glock has never been easier thanks to the standard rifling (for compatibility with all bullets, including cast), and a fully-supported chamber. 9mm conversion barrels allow you to shoot 9A-19mm out of a Glock 23 which normally shoots .40 S&W by simply swapping the barrels.Features:416R Stainless Steel Barrel1 in 16" TwistStainless FinishThreaded MuzzleUnbrandedGlock Gen 1-4 pistols (not Gen-5) DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.