The KelTec SUB2000, a modular pistol-caliber carbine, has evolved significantly across its three generations. The Gen 1 model introduced the folding carbine concept, compatible with various handgun magazines but lacked modern features like rails or an adjustable stock. The Gen 2, released in 2015, added a range of enhancements, including an adjustable stock, integrated Picatinny rails, and M-LOK slots, improving its modularity and ergonomics. It also featured a threaded barrel for suppressor use. The latest Gen 3 model builds on these upgrades by introducing a rotating forend, allowing optics to remain mounted even when folded, further refining its modularity and ease of use. The Gen 3 continues to support Glock magazines and includes improved trigger and ergonomic features, making it a versatile and user-friendly option for compact, foldable carbines​. The KelTec SUB2000 Gen 3 is optics-ready and it features a unique rotating forend, which allows you to keep your optic mounted even when the carbine is folded.. The 16" barrel maximizes the ballistic potential of your pistol ammunition, providing enhanced velocity and power at longer ranges. Built with a straightforward blowback system, the SUB2000 Gen 3 is easy to operate and maintain, with an adjustable stock and simple field-stripping process. The carbine supports M-LOK accessories and offers ample Picatinny rail space for customization. Compatible with Glock 19 and 17 magazines, this folding carbine pairs perfectly with your favorite Glock pistol, making it an ideal choice for those seeking a compact, powerful, and customizable firearm