An ex-marine who lost his arm in Afghanistan has got a custom superhero-like prosthetic replacement - which allows him to lift up to 400 lbs.

Cpl. Sebastian Guadalupe Gallegos, 32, came up with the idea of an aluminum and carbon-fiber arm after he broke 15 conventional prosthetic ones.

Sebastian had his friend George Schroeder, an engineer, manufacture the custom arm a year and half ago.

Now, Sebastian is able to box, lift weights and even care for his son better.