Kel-Tec SUB2K10GLKBLK: The Kel-Tec SUB2000 is a rugged, pistol-caliber carbine now chambered in 10mm Auto. The SUB2000 feeds reliably from Glock-style 10mm double stack 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.