This AR-10 specific Racer series magazine carrier is designed to withstand the intensity of 3gun competition. Built with a dual layer of Kydex this holster has the stiffness and durability to perform under the harshest conditions. The ambidextrous design allows you to carry on the right or left side, bullets forward or back. Our universal mounting system accepts our DOTS Ultimate Belt Attachment with bush button latch that slides to lock and is adjustable to fit belts up to 2" wide, DOTS Ultimate Belt Clip, and the Safariland ELS clips. Two adjustable retention screws give you control to set your level of retention just how you like it. The universal mounting system also allows you to couple two Racer AR mag carriers together or attach one of our Racer pistol mag carriers to it allowing more gear on your belt in a smaller space. With a black carbon fiber patter exterior and colored interior this magazine carrier will turn heads at any match. Fits any AR magazine.