The external body is made of aluminum and steel. The gun is driven by an electrical motor and features 7 rotating barrels. Smyth based the design off of A Ruger 10/22 semi-auto rifle. Smyth demonstrated how the gun actually fires in the video…and I am pretty sure I want one of these bad boys.
Oh…and Steampunk is a really cool art form…worth a Google search for sure!
Source : Youtube