MSR Distribution, MSR Distribution distributes the best modern sporting rifles, handguns, optics, and the widest selection of AK parts and accessories on the planet. Here are some of the lines that we carry; Arsenal, Aegis, Armalaser, Bersa, Burris, CZ, Dan Wesson, Fobus, Head Down, Metroarms, Proshot, SCCY, Steyr, Trijicon and many more.