The manual safety is ambidextrous, with a lever on each side of the slide. ... Feeling that the Desert Eagle is somewhat over-engineered for the relatively puny trio of ordinary magnum cartridges, Evan Whildin of ... He calls it the .50 Action Express and, ita#39;s a direct autoloading challenge to the .500 Linebaugh revolver, giving similar performance. ... Bullet Primer Powder Pressure DAL Velocity/Energy 1.