You can never have too much power in a NERF gun, right?! It’s in that spirit that Peter Sripol modded a NERF Elite 2.0 Turbine CS-18 to be powered by a mini four-stroke combustion engine mounted on top. The engine has half a horsepower. That sounds like a great idea!
You can watch the NERF gun in action in the video provided below. This thing fires NERF rounds like a machine gun! It’s pretty cool! It’s not quiet though, you can’t really come sneaking up on someone with this thing.