Here's some of the specs on it:
"BLUE BOMBER" has a unique switchback design which allows for a very long barrel while still keeping it a manageable length. It features a 2" x 4' rifled barrel with a 1.5:1 ratio combustion chamber. It has dual pistol grips offset 30 deg. from center to allow for an ergonomic feel when wielding it. The BBQ igniter for the dual ignition is mounted to the side of the rear grip. And the really cool innovation is the on-board propane injection system. The tank can be easily changed by removing the rear worm gear clamp and swapping to a fresh tank, and then re-installing the clamp. (notice the cut in the tank mounting collar. When tension is applied, the tank is held tightly in place.) Its overall length is around 56 inches. The single 180 deg part is a 2" drain trap.
