The Sub 2000 Gen 3 is the third generation of Kel-Tec's folding pistol caliber carbine. The Gen 3 features a rotating forend which allows for mounting of an optic without interference when folded. This simple, singlehanded movement and positive locking system keeps the optic zeroed and ready for use. The Sub 2000 uses a simple straight blowback system and very simple to operate and maintain. The modular handguard uses a picatinny top rail with M-LOK sections for mounting of desired accessories. Accepts popular Glock G19 9mm magazines.