The Advanced Technology Int. Shotforce RPG is a 12ga and 20ga (proud fit) shotgun rear AR-style pistol grip with a slim ergonomic design for comfort. It fits Maverick 88 12ga & 20ga (proud fit)” Mossberg 500/535/590/835 12ga & 20ga (proud fit)” Remington 870 12ga & 20ga (proud fit)” American Tactical MB3″ and Winchester 1200/1300 12ga & 20ga (proud fit). The textured grip increases control and accuracy. It is easy to install and includes adapters for all supported models and all mounting hardware. Made in the USA.