Caliber: 45 ACP. Capacity: 13-round magazine. Barrel: 4.6”. Weight: 26.28 oz. (without magazine). Length: 7.59”. overall. Features: Otherwise similar to the Model 17. Imported from Austria by Glock, Inc. Introduced 1991. SF version has tactical rail, smaller diameter grip, 10-round magazine capacity. Introduced 2007.