Yes, but these sales should be otherwise legal with records of the transaction now kept by Facebook.<p>Most states require you to show firearms purchaser IDs, called FID in my home state as well as a drivers license.<p>To acquire a FID, you need to go through a background check. This is how you are meant to know if the person is &quot;safe to sell to&quot;.<p>If people in state X have a problem with that, then they should get together and find a solution to it.<p>Until then I don&#x27;t think I can justify to myself censoring an otherwise completely legal discussion, especially when such a discussion can be used as a record of a sale that would otherwise not be present.<p>That&#x27;s just my two cents.