They won't call you or visit you. If your NICS is clear you'll get it in the mail. I've never been audited by them, but keep your records (Bound Book) in proper order and you'll have nothing to worry about. A couple of things to remember: 1. A C&R is not a dealer license, it is for your own personal use and collection 2. ATF cannot just show up at your door to see your records, they have to schedule and appointment, which can either be at your location or at their offices. The choice is yours, but unless you want to haul all your C&R firearms to their office, it is better to schedule it out your location. 3. Once you have your C&R, any firearm you buy that meets C&R status, whether you used your license to buy it or not, must go into your Bound Book. 4, You are allowed to sell some of your C&R firearms "in furtherance of your collection" but you cannot make it a business of buying and selling. 5. Unlike an 01 FFL, if you chose not to renew you C&R FFL at the end of its term, you do NOT have to send your records (Bound Book) to the ATF and can destroy the records if you so desire. Keep in mind that any firearm that is 50 years old or more is a C&R qualified firearm, this includes certain NFA registered machine guns. It also means that every year there are more things that qualify. In 2015 this means any pre-1966 manufactured firearm is now C&R and you can buy it using your C&R FFL and have it sent direct to you. So if you can find a nice pre-1966 AR-15 (Colt SP1) you can buy it direct. Other then the fact that you may spend all your money buying firearms... the C&R is the best $30 you'll probably ever spend. .