While the Buck Mark performs magically right from the box, many users struggle with little to no surface for positive seating. The TANDEMKROSS "Buck Pro" bumper gives the user an over sized textured zytel grip that allows the the user to confidently positively lock and seat every time. This drop in accessory attaches utilizing a patent pending attachment method. This means it does not require glue or smithing and can be custom adjusted to fit virtually any Buck Mark. ***NOTE: This accessory only fits more modern Buck Marks that have a certain grip frame. Please inquire and examine all pictures to determine if this accessory fits your Buck Mark. Does not include magazines, just the bumpers