Fits 9mm, 40cal, 45acp Double Stack Magazines.
Glock19 magazines are the shortest you want to use in these pouches.
Looking for the GAP pouch? Check out the Esstac Double Pistol GAP KYWI Pouch
(Will not work for Glock26 or similer magazines they too short in height).
Each Pouch comes with malice clip(s), for mounting to MOLLE.