The CDM Gear BMT mount light mount with three-slot rail for 12 gage shotguns holds the light between the barrel and magazine tube for fingertip actuation of lights on either the left or right side of the shotgun. It can use optional three-slot rails for mounting additional lighting or a laser on the other side. One tool for one bolt is all that is needed to attach and remove this clamp in seconds. Comes with all wrenches and 3M polyurethane no slip grip pads to protect your finish. Includes a built-in non-rotational sling swivel cup for QD PB sling swivels.