The Overwatch Precision Slide Cover Plate is a replacement backplate for your Glock OEM Firearms (all models except 42 & 43). This slide cover plate has no pointless sayings or designs, just a functional high-quality slide cover plate to top off your build. It's made of Type III anodized 7075-T6 aluminum and is serrated (80 LPI) for glare reduction. For Gen1-4. 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.