ok i bought a bow from my cousin and he gave me a muzzy predator arrow with it, but it had no tip. so i went out and bought one. i was thinking that you treaded it on there but it seems you dont, so how am i surpose to keep it on there?

Sounds like you bought a glue on point. If it is most good glues will work. A lot of guys that I know including me use Gorilla glue. Most epoxy glue's will work also

I forgot to mention that put a strip of teflon tape on the threads. It will help keep them tight, and from sticking when you want to turn them to reverse the barbs.

Just epoxy the head on and pin the tip by drilling though the existing hole and putting in a small roll pin or nail. I wouldn't glue paper together with Gorilla glue. I have found that glue to hold very few things together.