The Universal Magazine Carrier is our finely tuned magazine carrying system. It's important to always carry extra loaded magazines anywhere you may go, no one knows what situation you may be placed in. The Kydex magazine pouch is ambidextrous for all types of shooters, with a quick side change of the belt clip. Built from high-quality Kydex our universal mag carrier also includes MRD adjustable retention for user draw strength preference. The MRD device allows for a wide variate of 9mm and 40s&w magazines. This double stack mag holster has been tested with Glock, S&W, SIG, CZ and Taurus magazines.