TexasCHLforum.com

You just love using baited questions, don't you TXI?
Here's my reasoning:
A signed Bill of Sale is a contract between two parties in which one is giving ownership to another in exchange for money. It would stand to prove that the new owner of the firearm did not steal anything but entered into a legally binding sale of said item.

Chuck, would you recommend a bill of sale on purchases such as this?

I'd have to agree. A bill of Sale given to the buyer as well as the seller should be written up and signed. This would keep cheats and swindlers from claiming their guns was stolen.