G20 Gen3 produced under early FBI specification. The FBI initially adopted the 10mm Auto in Smith & Wesson revolvers and semi-auto platforms following the 1986 Miami Shootout; the G20 represents Glock's entry into that early 10mm LE market. Type: Pistol Action: Semi-Automatic Caliber: 10mm Auto Capacity: 15 Year introduced: 1991, Austria Weight: 30.69 oz Overall length: 7.59" Status: Active Intended use: Law Enforcement, Service