Receive and transfer firearms to 3rd parties, assuming they pass the background check. It also allows me to go pretty much anywhere in the U.S., purchase firearms, and bring them back to Indiana for transfer. I do not have the licensing for class 3 firearms and suppressors, though...just typical rifles, shotguns and handguns.
It's the same licensing most gun shops have. Takes an extensive background check, a lengthy ATF interview and of course, $$$. Subject to 3-year renewals and surprise inspections. Must keep clean record books.