The Advanced Technology Int. Shotforce PGS is a 12ga and 20ga shotgun pistol grip stock with an X Series recoil reducing butt-pad. It fits Maverick 88 12ga & 20ga Mossberg 500/535/590/835 12ga & 20ga Remington 870, American Tactical MB3, and Winchester 1200/1300 12ga & 20ga. The length of pull is 14". It is easy to install and includes adapters for all supported models.