Ergo Grip Sure Grip, Tactical Deluxe, Rubber, Black Finish, Palm Shelf, Fits AR-15/M16 4055-BK The ERGO AR15/M16 Tactical Deluxe Suregrip with Palm Shelf is an ergonomically enhanced pistol grip that fits all AR/M4. The ERGO tactical deluxe is an ambidextrous pistol grip that features the SUREGRIP texture and a Palm Shelf for increased stability. It's wider" heavier textured design makes for better handling and the A2 sized inner cavity is capable of storing many kit systems.