Swenson Glock barrels are precision machined from 4150 chrome moly vanadium steel and finished with melonite 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. Part may require fitting to your specific gun. Features4.49" Barrel1 in 16" TwistMelonite Finish 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.