The H&K MP5K-PDW Air Gun features high velocity, 400 fps semi-automatic action from a high capacity 40-shot clip. The repeater has realistic recoil action when shooting BBs from the ultra-realistic barrel. A foldable stock, forearm grip, and drop-out magazine make this one of the most exciting and fun to shoot BB air guns ever created. The gun weighs in at a lightweight 2.4 lbs. Works best with Walther brand C02.