Earliest two-pin Glock 17 Gen 1 — pre-dates the addition of the third locking block pin. The very first production Glocks. Type: Pistol Action: Semi-Auto Caliber: 9mm Luger Capacity: 17 Year introduced: 1982, Austria Weight: 22.05 oz Overall length: 7.32" Status: Discontinued Military use: Yes Intended use: Military, Law Enforcement