Galco HMC22B Horizontal Magazine Carrier, Black, Ambidextrous Fits 9mm, .357 and .40 double stack metal magazines Alternative to the traditional vertical magazine carrier; holds a single spare magazine in a horizontal position Tension unit adjustment provides a custom fit and secure magazine carry Two belt channels allow placement around a belt loop for added stability and security Ambidextrous; fits belts up to 1 1/2" wide