The ERGO-2 AR olive drab green pistol grip is uniquely designed to allow installation on both .223 and .308 AR/M4 lower receivers without a need for spacer inserts. This ambidextrous pistol grip features the SUREGRIP texture.Features:- A2 sized inner cavity compatible with many accessories available on the market- Unique design allows installation on both .223 and .308 AR/M4 lower receivers without a need for spacer inserts.- Ergonomically correct finger grooves- Integrated rear upper extension supports the web of your hand- Superior SUREGRIP™ texture improves weapon control, even while wearing gloves- Virtually impervious to oils and solvents- Made in the USASpecifications:- Fits .223 and .308 AR/M4 Lower Receivers- Color: Olive Drab Green- Ambidextrous