Backstory
I purchased a firearm from a private seller on armslist back in July. Since I live in CA (yes im aware it sucks...) we met at a local FFL, did the DROS paperwork, exchanged firearm for money, and then 10 days later I picked up my new to me firearm. I have since had zero contact with the seller, taken the firearm to the range several times and enjoyed it thouroughly. Also for what it's worth, the firearm i purchased was an off roster handgun in CA, and the individual i purchased it from stated he was a federal agent with some kind of DoD police agency, and would be moving from CA to TX soon with his wife.
Call from ATF today...
Come today, while im at home I get a call from an ATF agent. He is stating he is from the Pheonix, AZ branch and investing the individual that i purchased the firearm from back in july. This was all quite alarming, but after confirming that this was an actual ATF agent, he told me that the individual i purchased the firearm from, has been buying off roster/other hard to find (by CA standards) firearms in AZ and reselling them in CA. The agent also said that in some cases the individual i purchased the firearm from was transfering up to 6 firearms all bought in AZ to individuals in CA, and likely going to AZ to purchase specifically sought after firearms by CA residence. To me, this seems like a clear violation of straw purchase laws for those other indiciduals, but im assuming i should be ok. The ATF agent was curious how i knew/met the seller, how much the gun was listed for on armslist and how much i ended up purchasing it for, and a couple other questions regarding what was said at the time of the transaction/transfer. After speaking with thr ATF agent some more he stated that i am not in trouble, thanked me for being helpful, gave me several ways to contact him if i had any further questions, and let me know that i would likely be able to keep my firearm, but ultimately that is up to the US district atorney.
Now:
What should i do from here? Worth talking to a lawyer? Just hope not to hear back from the ATF at all? Run for da woods?