This Trijicon Glock RM44 RMR Handgun Mount is designed to be used with the Trijicon RMR Red Dot sights. These mounts are flawlessly designed to provide for extremely precise capabilities. The mount is simple to install and easy to remove. You are able to attach and sight all of Trijicon's RMR devices with this piece. The mount is crafted of the highest quality steel for rugged durability. This mount will not weigh your firearm down or add stress to your weapon, as it is only 33 grams. The strong build will help your scope to hold its alignment. Fits all Glock models Replaces rear sight to allow the mounting of any Trijicon RMR Made from steel, weighs 33 grams Professional installation recommended