The KelTec SUB2000 Gen3 Multi-Mag Semi-Auto Pistol-Caliber Carbine enhances the wildly popular SUB2000 formula with multi-mag convenience. It comes from the factory with a magazine catch that fits Smith & Wesson M&P 9mm mags, but the magazine catch can be swapped out simply and easily to fit other popular magazines like the SIG SAUER P320 or P226, CZ 75, Beretta, and more (magazine catches not included). Like prior models, the SUB2000 Gen3 Multi-Mag folds in half without disturbing the optic thanks to its rotating forend. The simple folding mechanism and positive locking system keeps your optic zeroed and ready to go when you need it. It tucks neatly inside a backpack or under a seat, but unfolds in seconds to deliver superior ballistic performance. Like its forebears, the Gen3 operates via a simple and robust straight blowback action that's incredibly reliable. The stock is fully adjustable for fit, and the M-LOK forend provides plenty of space for accessories. Upper and lower Picatinny rails make it easy to attach a red dot and foregrip or light. Accepts Smith & Wesson M&P 9mm mags from the factory Magazine catch can be swapped to accept other popular 9mm magazines like the SIG P320 or P226, CZ 75, etc. (magazine catches not included) Folds in half for easy storage and transport Rotating forend allows you to keep your optic on and zeroed when folded Barrel maximizes 9mm ballistic performance Adjustable stock M-LOK forend Upper and lower Picatinny rails Straight blowback action