Fits universal 9MM,10MM,.357, .40, .45 caliber magazine Apply to single or double stack magazines Too l-free adjustment Quick draw Ambidexterous use Fits all but not limited to the firearms listed below: Glock: Glock 17/19/19X/22/23/26/27/31/32/33/34/35/37/38/39/43x/45/48 (Ge...