I have met some of the local ATF guys and other than having a BIG pistol on their hip, they are just like you and me.

I don't fear an audit, my books are clear and consise. I took the bound book form on one of the pages and made a Spreadsheet like it. Have two lists, one for every gun (personal) and a C&R list.

It comes in handy when you want to check serial numbers and do an inventory.