Had a FFL in California for almost 30 years, and regular as clockwork they came every year. Wanted to see the paperwork, Log Books and then they checked every gun (almost 200) against the logs and what was stored. I had to have a seperate safe for any guns that were mine and each one had to be marked "not for sale". Then the state made it almost impossible to keep a FFL out of you home and from what i hears the USA lost about 300,000 FFL holders, One year they came at 9 PM and demanded acess to all of the records and they were even looking for some special ammo. ( i think it was the old BAT 9mm from germany, They wanted to see every round i still had and then i had to account for every box that was sold, that was one pain in the ass.) While i was talking to one agent I asked what their wepon regulations were, Wearing his fancy BATF jacket and badge , he told me they were NOT allowed to carry on the job, they were auditors. Most audits never took less than 4-5 hours. One year at home there were three agents that came and one asked to use the restroom, I had a very sophicated CCTV system in my own home and sure as hell the agent went into my bedroom next to the toilet and proceeded to check all the corners of the room, When they left i checked the tape and thougfht about calling them on it, but discretion got the best of me. The following year i just gave it up, didn't want to deal with all the hassel. Ones mans story thats all.