Looks like I was correct in my previous post, guessing that the "Adventureland Safari Gun" was a Jungle Cruise-related project. One of the site's loyal readers was the winning bidder, and e-mailed me a shots of a couple of the pictures you can see while looking in through the gun:
This one is clearly a photo take from our favorite attraction!
And this one obviously depicts the attraction in cartoon form. Don't miss the plastic python and hit that other boat!
Thanks to nifty Nick for sending in these pictures. Hope you enjoy shooting hippos at home!