MADE IN THE USA Premium Slides for GlockA(R) 17 & 19 (Gen 1 to 4) from Brownells The Premium Slide for GlockA(R) 17 and 19 by Brownells replaces existing non-MOS OEM slides with an upgraded look with proven patented mounting technology. Our slides feature angled serrations for better grip engagement when racking the slide rearward, pocket cuts out to reduce weight and are optic-ready. Made in the USA from quality materials, these slides are compatible from Gen 1 to Gen 4 GlockA(R) frames. Machined from premium heat treated 17-4 Stainless Steel. Black Nitride Coating. Compatible with Gen 1, Gen 2, Gen 3, Gen 4 GlockA(R) frames. Angled front and r Mfg: Brownells