"Trading paper" is a good thing to do, but only from a personal aspect. It protects both seller and buyer.
Buyer produces bill of sale, dated AFTER that bullet that killed the prostitute was found.
Seller produces bill of sale, dated BEFORE that bullet that killed the prostitute was found.
But in MOST states, there is no legal requirement to trade paper between two private individuals, including Colorado. (I sure miss that place!)
But in Illinois, to legally transfer a firearm between two private parties, both parties must live in the state, both parties must possess a valid FOID card. Both parties must write down, among the obvious information, the FOID number of the other guy.
The seller, per Illinois state law, must keep this record for TEN years, "producible on demand" by any law enforcemnt agency.
So, if I lived in Illinois and owned all my guns for 10 yrs and a day, I sold them all 10 years ago........and I just cleaned out my old file drawer.
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