Safariland Model 73 Open Top Double Magazine Pouch, For 2.25 Duty Belts, Fits Glock 17, Hardshell STX, STX Tactical Black Finish 73-83-13 The Model 73 is an open top double magazine pouch designed to carry two magazines of ammunition on a 2.25" (58mm) duty belt. It features both vertical and horizontal carry on the belt and secures the magazine in a butt-up position on the belt for easy access. A tension screw allows retention adjustment by the user. It is constructed of SafariLaminate.