The semi-automatic SUB2000 is designed to be the most convenient 9mm caliber carbine available. It folds completely in half for easy storage and can accept G19/G17 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. - Caliber 9x19 mm - Weight Unloaded 4.2 lbs - Magazine Capacity 10rd - Overall Length 30.45 - Length Collapsed 29.25 - Length Folded 16.15 - Barrel Length 16.15 - Twist Rate 1:10 - Trigger Pull 5 lbs