This Command Arms Dual AR-15 Magazine Clamp is constructed of lightweight, reinforced polymer that will not deform or scratch the user's magazines. This redesigned clamp has been made wider for quicker magazine changes and is compatible with Metal-Bodied AR-15 Magazines only. It comes complete with 2 different Extended Floorplates that act as bumper pads to prevent damage in the event the coupled magazines are dropped onto a hard surface, as well as assist the shooter in the prone position by acting as an enhanced type of "Magazine Monopod." The tightness of the clamp is controlled by a pair of screws. Made in Israel.