The Treasure Of Pancho Villa.

Tom Bryan (Rory Calhoun) and his Lewis machine gun he names ("La Cucaracha") joins a band of revolutionaries headed by Colonel Juan Castro (Gilbert Roland) Bryan is tired of the squalid life he is living in Mexico and is considering offering his services to Cuba. Castro is killed by the pursuing Mexicans and Bryan has to blow up the gold in order to prevent them recovering it.