Have your gun at the ready. Hide-A-Gun die cast base can be mounted horizontal or vertical with the supplied mounting screws. Sight pin allows the gun to positioned at any angle and locked into position. Adapters Fit .22, .25, .38, .357, 9mm, .44 Cal, .45 Cal. Screw base measures 1¾"x 2½". Weighs .79 lbs.