Ergo Grip ERGO 2 SUREGRIP, Flat Top, Fits AR-15/M16/AR-10, Black 4014-BK The ERGO 2 Flattop AR15/AR10 SUREGRIP is a truly ergonomic" shooter focused flat top grip for AR platform rifles and chassis systems that accept AR pattern pistol grips. 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.