The Kel-Tec Sub-2000 in 9mm configured for Glock 17 magazines with 16-inch barrel is a folding semi-auto carbine that accepts standard Glock 17 double-stack magazines. When folded in half, the Sub-2000 fits in a backpack or computer bag. The Gen 2 version improved the folding mechanism and added an optic-compatible rail. Extremely compact and reliable for a blowback carbine. Type: Semi-Auto Rifle Action: Blowback Caliber: 9mm Capacity: 17 Year introduced: 2001, USA Weight: 4.25 oz Overall length: 29.5" Status: Active Intended use: Home Defense, Backpacking, Plinking