US Patent 8225705 Firearm

Automatic firearm with firing mode selector (6) to change the firing mode from automatic firing mode to semi-automatic firing mode, where the firearm (1) is equipped with a firing mechanism (11) with selection control (37) which enables the firearm (1) to function in closed bolt firing mode or open bolt firing mode, and in automatic firing mode as well as semi-automatic firing mode in both closed and open bolt firing mode.