The semi-automatic Sub-2000 is designed to be the most convenient 9mm caliber rifle available. It's adjustable and foldable to 16.25 x 7 inches for easy storage and can accept most popular handgun magazines. Plus it can easily be disassembled for cleaning or inspection without tools. Ideal for backpacking trips and situations where space and convenience are paramount. Takes Smith & Wesson M&P 9mm magazines. - Caliber 9MM LUGER (9X19 PARA) - Action SEMI AUTO - Capacity 17 ROUNDS - Barrel Length 16.25 BARREL - Weight 4.25 LBS. - Finish TAN