Meet The Goliathon, an immense steampunk-modded Nerf gun with "all the horsepower of a full-size steam locomotive."

It was created by steampunk propmaker Professor T. Lemetry using a Nerf Vulcan Blaster, copper piping, four different gauges and a valve handle.

It's currently for sale at the good prof's Etsy shop, Steampunk 101, for $350.

[geekosystem.]