Ultimate Arms Gear Tactical Magpul MOE CTR Ribbed Stealth Black Slip On Rubber Recoil Reducing Combat Buttpad Butt Pad For Magpul Style MOE CTR Stock AR-15 AR15 M4 Rifle Shotgun Injection Molded Black Rubber Construction. Military Style Buttpad With Ergonomic Design. Easy Installation - Simply Slips On Stock's Rear. 1" Extension : Reduces Recoil And Increases Length Of Pull. Raised Ridges Provide A Supportive Comfort and Positive Non-Slip Shouldering. This AR Buttpad Features 1" LOP and is Made of A Soft, Yet Sturdy Rubber Compound That Will Aide In Absorbing Recoil On Your Rifle. It Is For A Magpul CTR MOE Stock Only.