A friend of mine whos fairly new to paintball asked me "with a two piece barrel, whats the bore of the tip" and my response was

.
Now I've only been playing 4-5 months more than him but he's always coming to me with questions and this is the only one thats stumped me. I had never thought about what the bore of the tip might be, everyone is always concerned about the bore of barrel back.
If anyone can shine some light on this i'd appreciate it.