The Remington 870 top folding stocks make an excellent compact package. These stocks are made of solid cast steel with plastic over molded around it. This stock is operated with a simple push of a thumb button to lock it in either the open or closed position.This stock fits shotguns with rifle sights and ventilated rib barrels. Will not fit shotguns with Ghost Ring style sights. Fits 2 3/4, 3 and 3 1/2 inch guns.