The original Ergo Grip, developed by Steve Hines, was the first truly ergonomic, shooter focused grip for AR platform rifles. 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, and the Aggressive Texture (AT) for increased traction. Additional Features: a Ergonomically correct finger grooves a Integrated rear upper extension supports the web of your hand a Virtually impervious to oils and solvents a Comes with The Gapper