The ERGO AR15/M16 Flat Top Tactical Deluxe SUREGRIP fits most modern chassis system stocks commonly made for bolt action rifles. The over molded grip has a heavy texture and ambidextrous palm swells. It fits medium to large hands best and provides a positive" comfortable grip with sure weapon control in all weather conditions" even with wet hands. The top has been made flat so it will fit onto chassis system stocks that take AR-15 type grips. Although this grip will fit on an AR-15 type rifle the back of the grip does not lay flush with the back of the receiver. This model comes with an adjustable palm shelf that attaches to the bottom of the grip.