The most influential semi-automatic pistol ever designed, by John Moses Browning. Selected after one of the most rigorous pistol trials in US history — including a test where a pistol was fired 6,000 rounds in one day without malfunction. The US military standard sidearm from 1911 to 1985 — 74 years of continuous service. The .45 ACP cartridge was specifically developed alongside the pistol at the Army's request for more stopping power after experiences in the Philippines. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 7 Year introduced: 1911, USA Weight: 38 oz Overall length: 8.59" Status: Discontinued Military use: Yes Intended use: military, law enforcement, civilian, target