It's the government, so probably carrier pigeon.
Or storming your front door and shooting your dog while yelling "SPECIAL DELIVERY"
Seriously, C&R holders are eligible for bound book inspection once a year. Who here has been inspected? How did you get the notification?
I've had my license for a few months now.
I don't expect an audit anytime soon, but I don't want to accidentally throw out a letter from the ATF with my junk mail and then get stormed like some of the above posts!
I think what may have triggered the inspection was the large number of dispositions I had during that 3 year period as I was selling in preparation of purchasing some new, relatively expensive C&Rs.
How would the ATF know about any dispositions (or even acquistions for that matter) that you made before they saw your bound book? My understanding is that the bound book is basically on the honor system. The ATF has no way of knowing if it is correct or not, only whether or not it is in their required format.
When you renew, you have to list the number of aquisitions and dispositions from the previous 3 years you had your license.