Kel-Tec SUB2000 S&W M&P Magazine 9mm Luger 16.25in Black Semi Automatic Rifle - 17+1 Rounds - The semi-automatic SUB2000 is designed to be lightweight, compact, and effective. It's foldable for easy storage and accepts most popular handgun magazines. Yes, it's a handgun caliber, but the 16.25in barrel offers ballistic advantage and distance accuracy. It can also be easily disassembled for cleaning or inspection without the use of tools. The stock is adjustable to three different positions for the shooter's comfort. Each position adds approximately 5/8-inch to the overall length of the weapon, with a total extension of 1.25-inches in the further rearward position. The SUB2000 is particularly ideal for backpacking trips and situations where space and convenience are paramount. Designed With A Straight Blow-Back System Durable And Abrasion Resistant Zytel Two Integrated Picatinny Rails Adjustable Stock Push Bolt Safety Intuitive Sights