Unscrew a factory buttplate or pad and screw on Pachmayrs premier model - with no gunsmithing! The hole spacing usually matches and, where needed, rifle models include an adapter/spacer to make mounting easier. The exterior shape is ground and finished to within .050'''' of the stock. All have solid sides and a black base. Rifle pads feature a basketweave face so the gun stays on your shoulder. Shotgun pads are Old English-style with a leather grained face for quick shouldering. Mfg: Pachmayr SPECS: Black Decelerator rubber, black base. Designed to fit current production models that were fitted at the factory with an O.E.M. recoil pad. 1'''' (2.5cm) thick. Winchester - Post ˜99: 4.88'''' long, 1.61'''' wide.