Harrah's in Reno had one and pictures of it in use. I too do not have any problem with the gun as it is only a piece of metal and henceforth no different than any other piece of metal, neither good nor bad but simply inanimate.
I do however feel strongly about conservation and believe that those who poach or mis-treat animals wild or domestic should be severely punished.
KTK
OFC
Frankly with all the talk of avian flu I'm not so sure the days when "the skys were darkened" with passenger pigeons were all that great