Sons of Guns (2011)

S02E13 Boys and Their Maxim Toys

Will and the RJ team work to refurbish a World War I Maxim machine gun, attaching it to a plane's engine and developing an interrupter system that enables the weapon to fire smoothly between the spinning propeller blades. Meanwhile, Vince and Steph join forces to adapt a Glock with specialized charging handles, providing a solution for a customer with multiple sclerosis, allowing them to shoot safely once more.