The .45 ACP full-size M&P addressed the market segment that refused to abandon the .45 ACP service cartridge. Slightly wider frame than the 9mm/40 variants to accommodate the larger case, retaining the same interchangeable backstrap ergonomics. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 10 Year introduced: 2007, USA Weight: 29.6 oz Overall length: 8.05" Status: Discontinued Intended use: duty, law_enforcement, home_defense