The ERGO Flat Top Sure Grip Pistol Grip is a truly ergonomic, shooter focused flat top grip for AR platform rifles and chassis systems. Designed for performance by creating a better interface between the shooter and firearm, the Ergo Grip is still the standard by which positive grip and shooter comfort are measured. The ERGO Grip comes with the patented Gapper for increased comfort. Includes Installation Hardware Pack. Heavy textured overmolded SUREGRIP gives you the comfort and control necessary for precision shooting. Does not include a plug, but can be fitted with the Ergo A2 Plug. FeaturesDesign allows installation on both .223 and .308 AR-15 type lower receivers.Fits modern chassis system stocks commonly made for bolt action rifles and AR-15/AR-10Ergonomically correct finger groovesOvermolded SUREGRIP material provides non-slip gripVirtually impervious to oils and solventsIncludes Installation Hardware PackComes with The Gapper