The Agency Arms Battle Plate is machined out of 6061 Aluminum. It is machined to precisely cover and protect a Glock slide that has been machined for the Trijicon RMR family of red dot sights. This battle plate may be used for other manufacturer's RMR cuts, however we can only guarantee fitment with Agency Arms milled slides. It features serrations on the 45 degree chamfer and on the top of the slide (when applicable) which provide great traction for one handed manipulations. Will not fit Wide Body Glock.