This double magazine pistol pouch is affixed to the waistband by the same system used in paddle holsters. Great for carrying two more magazines on the range or simply carrying backup magazines about town, this magazine pouch is made to accommodate Group 0 pistol magazines. Group 0 Magazine Pouches fit the following magazines: Glock 17/19/22/23/25/26/27/31/32/33/34/35/37/38/39.