AR15 is fine as long as it isn't in 556/.223 You cannot kill anything with a .223
There was a video posted that showed a woodpecker taking a 223 right to the beak and it didn't even knock him off the telephone pole.
I read it on the internet....
Bet you are a hoot to hunt with.
That or everyone take up a collection to send you hunting with Chaney...lol
RP