[GoneButNotForgotten]

For a lot of people the adrenaline deadens the pain so much that you don't even notice much. I've been hit multiple times and had it not splattered I wouldn't have noticed. And they are right about the gloves. You said you wanted to avoid buying gear, the one thing I will recommend is some paintball gloves. They have a shell type thing to protect your hand. Which is one of the most painful spots to get hit. Most places don't rent out gloves that I've seen.

I'm going to assume your going to an actual paintball place. It is probably best to go there first. It is safer and people will have their guns chrono'd correctly. Plus you can usually rent from them to determine if you like it. I miss playing. Haven't had enough money for it in a while. Expensive sport, but very addicting and a lot of fun.