ERGO Grip Tactical Deluxe Grip w/Palm Shelf AR-15/M-16 Ambidextrous Black K. ERGO constructed these AR15 Lower Parts with overmolded SUREGRIP rubber that features a heavy texture to improve your grasp in any conditions. The Ergo Grip Tactical Deluxe Grips w/Palm Shelf is designed for both left and right-hand shooters and the adjustable palm shelf provides additional support while range training or hunting prey. Pick up this Ergo Grip Tactical Deluxe Grips w/Palm Shelf to help stabilize your shots and create a more comfortable shooting experience. Specifications for Ergo Grip Tactical Deluxe Grips w/Palm Shelf: Manufacturer: ERGO Gun Model: M16 AR-15 Fabric/Material: Suregrip Rubber Hand: Ambidextrous Features of Ergo Grip AR15/M16 R/L Hand Deluxe Tactical Gun Grip w/ Palm Shelf: Fits AR-15 type firearms in .223 and .308 Overmolded SUREGRIP material with heavy texture ERGO SURE GRIP rubber texture Ambidextrous palm swell Adjustable palm shelf Does not include a plug. Not compatible with 4935 plug. FAQ - The Palm Shelf cannot be added to the 4045 and cannot be purchased separately. Package Contents: Ergo Grip Tactical Deluxe Grips w/Palm Shelf Installation hardware What firearm models does the manufacturer say Ergo Grip Tactical Deluxe Grips w/Palm Shelf is compatible with? The manufacturer suggests that Ergo Grip Tactical Deluxe Grips w/Palm Shelf is compatible with AR-15 M16ERGO Grips 4055-B-BK: Tactical Deluxe Grip With Palm Shelf AR15/M16 Ambidextrous Black