Instead of building complete aircraft as they had in World War I, Daimler built aircraft components, including 50,800 Bristol radial aero-engines—Mercury, Hercules and Pegasus—with full sets of parts for 9,500 more of these engines,[108] propeller shafts for Rolls-Royce aero-engines, and 14,356 gun-turrets for bombers including their Browning machine guns. In all, Daimler produced more than 10 million aircraft parts during the war.[108] All this production is Daimler's alone excluding BSA's other involvements.