The ZEV Technologies HEX GEN 4 Glock 19 slide is a great way to make your Glock stand out amongst the crowd. This titanium gray slide features a HEX design and built in cut out for an RMR sight. Included is a RMR cut cover for when your sight is not in use. Machined from 17-4 billet stainless steel then PCD coated offering a rockwell hardness rating above that of factory coatings. This is CNC machined to allow the RMR to have an absolute Co-Witness with the sights.