Strike Industries Patriot Series PRO Model Pistol Grip PTG-PRO give you excellent ergonomics and the enduring strength of advanced, military grade polymers. This no-nonsense Strike Industries gun grip sets your hand close to the receiver, and the finely-tuned angle keeps your arm and shoulder tight and comfortable. The Pro gun grip features a rear lip which increases trigger pull ergonomics; less effort equals more consistent trigger squeezes and better groupings, and it also ensures more comfort over longer periods of time. The lower storage compartment of the Strike Patriot Pro AR-15 Pistol Grip seals with a hinge and lock, as opposed to rubber and plastic caps that fall out and have the potential of getting lost. Strike Industries allows you to store tools, extra rounds, and other AR essentials exclusively on the PRO model. For added class, the grip features the American stars and stripes, and it fits all M4, M16, AR15, and AR10 firearms. Made of military grade polymers and engineered to last, forever, the StrikeIndustries Patriot Professional Model Handgun Grip w/ Lower Storage is an excellent addition to your firearm.