Ruger1022,
Heh, nice rifle...I don't have a Ruger, but a friend does. We haven't been out shooting in a while, but I remember that as a nice rifle.
As far as Jeep trailers, if you mean the old surplus trailer that you often see behind MBs or M151s, they are called the M100 trailer if memory serves.
You can probably find one here but keep in mind a nice one will be pricey, could be a grand or so. The other thing to keep in mind is that it might come with the NATO style pintle hitch, which isn't compatible with the XTerra class 3 hitch. I have seen some with a class 3 ball adapter.
One other caveat. For my rover, I'm going to build a trailer...ha, once I get around to it...I have a spare axle casing, spindles and hubs. My goal is to have the trailer use the same wheels as the truck...I'm already up to my ears in tires and rims and don't want another oddball size in the garage. Just another thing to keep in mind.
Bogatyr