I was wandering around as I often do and came upon this article from the National Shooting Sports Foundation. Apparently, the NSSF has been working in conjunction with the ATF with the "Don't lie for the other guy" program to combat straw purchases.
This article give tips to help FFL's prevent straw purchases by utilizing the records they are required to keep and apparently what is a common practice among straw purchasers.
"As an FFL, you know that you have to maintain a separate file, in alphabetical or chronological order, of ATF Forms 4473 in cases where the NICS check came back “denied”, or where a delayed response was received and no firearm was transferred. But, did you know that this file can be another valuable tool in detecting and preventing straw purchases?
Persons who are denied by NICS often send in a family member, someone they reside with or a friend to the buy the exact firearm that they wanted to purchase.Â In addition to employing the techniques of the “Don’t Lie” program, NSSF recommends that you review your denied Form 4473 file before every firearms transaction.
As soon as the buyer completes Section A of Form 4473, and before calling in the NICS check, you should compare the last name, the address and, if you have a practice of recording it on your 4473 forms, the serial number of the firearm that the buyer wishes to obtain. If there is no apparent match to your denied Forms 4473, and you have no other reason to suspect a straw purchase you can continue with the transaction.
If there is a match to the last name, address or firearm; you should make further inquiries of the buyer and if you are not completely satisfied that they are in fact the actual buyer of the firearm, you must decline the sale."