I would only add that you'd be wise to check your state and local regulations regarding hunting with the AR. Some states have regs regarding magazine capacity of semi-auto weapons. If so, make sure your AR is appropriately configured before you go into the woods. It'd suck to get a ticket because you went deer hunting with a 20 round magazine and the regs say 5 round mags max. It's a minor ticket, but why chance it at all?

Mike