TheLibertarianMind

It would be really cool if it fired from open bolt... Imagine having 4 different types of ammo in the mag. You then could switch which ammo you want to shoot by manually rotating/indexing the mag to the desired type of ammo. Sweet. Pull the trigger, it chambers and fires, ejects, and the bolt stayed to the rear, allowing you to shoot again or index to a different type of ammo and fire again. If not open bolt, a mag tube shut off would be a nice feature.