I posted a WTB ad and gun_dreamer sent me an almost exact same message that another person posted about. Buyer beware and hope the moderators ban him. He was using a burner phone with text mail.
I hate seeing these types of posts.
Guys, for guns use https://www.guntab.com/ to make your payment; they hold the funds until the buyer approves release, i.e., you actually receive the gun and have the opportunity to inspect it. Everything else use goods and services through PayPal or Venmo.