Rival Arms Match Grade Upgrade Slide For Glock 19 Gen 4, RMR Cut Ready, Front and Rear Serrations, Satin Black Quench-Polish-Quench (QPQ) Finish RA-RA10G204A Created for a variety of models and centered on modern design and compatibility with a wide range of parts and accessories" Rival Arms slides set the tempo for both the look and performance of your pistol.