The 1139750 773 open top magazine pouch is an innovative competition pouch design. It utilizes the same adjustable belt loop and rollers as the 771 but has a closed-in front area of the pouch so that it helps retain the magazine. The 773 is adjustable to any angle within a 90 degree range and the belt loop can also be ordered separately in three sizes: 1.5 in. (38 mm), 1.75 in. (45 mm), and 2.25 in. (58 mm). fits double stacked 9mm magazines like Glock 17 and Glock 22.