I'm still confused on this. I've been looking at getting a Reo, but how exactly does one run the feed tube up into the atty? Sounds like I'd have to cut a hole or something? Which I wouldn't care for doing since I'd like to be able to still use my attys on my mechs.
May RBAs have the center pin of the 510 drilled, called a Bottom Feed version. For regular commercial atties like Cisco Spec, you have a open hole already.