Single-stack .45 ACP Glock — the only true slim-line large-caliber Glock. Six-round magazine in a package narrower than most .45s. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 6 Year introduced: 2000, Austria Weight: 20.11 oz Overall length: 6.77" Status: Active Intended use: Concealed Carry