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. – This grip was purchased by the U.S. Military for use on the original SPR and MK 12 rifles in 2001. – RIGID models are molded into a hard polymer grip for a firm feel while SUREGRIP™ models feature an over molded rubber-like surface for a more positive grip. Both grip styles are designed to help prevent fatigue and enhance weapon control. – Fits AR-15 type firearms in .223 – Rigid Hard Polymer material – Ergonomically correct finger grooves – Integrated rear upper extension supports the web of your hand – Superior Rhino Hide™ texture improves weapon control – Virtually impervious to oils and solvents – Comes with The Gapper™ – This grip only comes in black.