What's in the Box Kel-Tec SUB2000 Gen3 10mm Semi-Auto Rifle (1) 15-Round Magazine Cable Lock Owner's Manual The KelTec SUB2000 GLK 10mm is a rugged, pistol-caliber carbine now chambered in 10mm Auto. The SUB2000 GLK 10mm feeds reliably from Glock 20 magazines, including extended stick mags and even a 50rd drum. Built upon the 3rd generation design, it features a rotating forend, allowing the gun to fold in half, optics and all. Other features optics ready; M-LOK; Picatinny rail on top and bottom; threaded barrel and adjustable sights. Firearm Features Push Bolt Safety Folding Design 5 / 8"x24 Thread 5.6 lb Weight Firearm Specifications Manufacturer: Kel-Tec Model: SUB2000 Gen3 Caliber: 10mm Barrel Length: 16.15" Threaded Finish: Black Magazine Capacity: 15 Rounds