The Kel-Tec Sub-2000 in .40 S&W configured for Glock 22 magazines with 16-inch barrel is the higher-powered variant of the folding carbine, chambered in the once-dominant law enforcement cartridge. The .40 S&W cartridge gains meaningful velocity from the carbine-length barrel compared to a pistol, improving terminal performance. Less common than the 9mm variants. Type: Semi-Auto Rifle Action: Blowback Caliber: .40 S&W Capacity: 15 Year introduced: 2001, USA Weight: 4.25 oz Overall length: 29.5" Status: Active Intended use: Home Defense, Law Enforcement, Plinking