The SIG P220 in .45 ACP competed in the US XM9 Service Pistol trials alongside the Beretta 92 and H&K P7M13. While ultimately losing to the Beretta, the P220 .45 ACP is considered one of the finest large-caliber service pistols ever produced. Type: Semi-Auto Pistol Action: Double/Single-Action Caliber: 45 ACP Capacity: 7 Year introduced: 1975, Switzerland/Germany Weight: 30.4 oz Overall length: 7.8" Status: Active Intended use: Law Enforcement, Military, Collector