</font><font color="blueclass=small">( My rtv has a hard cab so I guess you would have to mount it either to the inside or ouside of the rear window some how. Let me know what your thinking about. )</font>
dkhunter,
I've never seen a hard cab in person. Is the rear caged area covered with glass? If so, inside or outside? Do you have a camera where you can submit pics of the back of the cab? I'd like to see what's available for attaching to the ROPS and/or the cage.
My neighbor has the ATV mounted rifle rack (the open one like you're thinking of). I need to go look at it closer, but here's an option I'm thinking of:
In the attached pic, look for a pipe, near the top front (towards the windshield). The mirror and spotlight are mounted to it. I made/mounted this pipe specifically for mounting accessories that were made to mount to an ATV rack. If something like was mounted to the rear of your ROPS (and it can be mounted at any height), you should be able to mount a gun rack to it.
EDIT - BTW, there's pistol mounts made for this size pipe as well. I have one on mine (and you can see the little ball next to the mirror, but the holster/pistol are removed). If you're considering a pistol mount as well, this may work nicely. There's one on e-bay right now with a "buy-it-now" for $25.
Next post and pic is another alternative.