The Blackhawk convertible chambered for both .45 ACP (via full-moon clips) and .45 Colt ships with two cylinders. Introduced in 1970, it was a practical choice for shooters who already stocked .45 ACP for 1911 pistols and wanted a revolver that shared ammunition. The convertible concept provides maximum caliber flexibility in a single-action platform. Type: Revolver Action: Single-Action Caliber: .45 ACP/.45 Colt Capacity: 6 Year introduced: 1970, USA Weight: 40 oz Overall length: 10.38" Status: Active Intended use: hunting, target, collector