The world’s lightest machine gun that can be fired from a drum and reloaded on the move, Ultimax 100 Mk8 is extremely accurate due to its constant recoil system for greater controllability. Featuring a foldable, retractable buttstock with adjustable height, an open-bolt system that prevents ammunition cook-off and a trigger safety mechanism, Ultimax 100 Mk8 is compatible with various magazine types such as the M16-type and SAR21-type box magazines, 100 rounds C-MAG and Ultimax 100 drum magazine.