I'm pretty sure walkie-talkies are an available item in Route (and if not, that it's at least reasonable for people to be able to find and buy them), so sure, he can have them. They'll work at about the typical range for walkie-talkies - a few hundred feet, if that - and will be difficult to hear through, as noted.

But sure, he's welcome to them! (Do I want to know what procedure you follow to replace the batteries? >> )