Red tipped guns are not 'real' guns. It was possibly an 'airsoft' gun, meaning that it was designed to shoot plastic pellets similar to BBs.
Supposedly this will not kill you. Unfortunately, as we all too well know, just being shocked by someone firing a 'gun' at you is enough for you to lose your balance and get injured.
It's good to know that the Tribal Police had words with the apparent offenders, but if there was a subsequent incident it obviously wasn't enough to dissuade the culprits. If the Bar M Dude Ranch set up the ride, you might want to mention this incident to the operators. Thirty-five annoyed cyclists may very well wish to spend their hard earned money elsewhere. That's a lot of tourist dollars which they can probably ill afford to lose.
East Hill