The Smith & Wesson Response breaks barriers for those looking to enter the pistol caliber carbine market. With its innovative Flexmag System you can use a wide range of double stack 9mm pistol magazines from Smith & Wesson amd other manufacturers. The familiar MSR controls make it an easy transition for those looking to use on the range and with the ability to change parts with existing MSR accessories it makes optimizing to your needs easy. Take control with the new Smith & Wesson Response! - Model Smith & Wesson Response 10-rourid NJ Compliant model - Sights N/A Optic-ready - Weight (unloaded) 5.9 lbs. (2676 g) w/o magazine 6.2 lbs. (2812 g) w/empty 10-round magazine - Muzzle Non-Threaded Muzzle - Barrel 16.5 (41.9 cm) barrel with black oxide finish - Length Action 33.75 Long (85.7 cm) - Action Semi-auto blowback - Grip Polymerwith 4 interchangeable length palmswell adapters - Butt Stock Fixed length - Receiver Polymer Upper and Lower Receiver - Other Includes FLEXMAG Kits Compatible with M&P doublestack and G17/G19 magazines - Rifling 1:10 Twist - Manual Safety AR-15/MSR-style manual safety lever - Handguard With M-LOK slots and Picatinny-style rail