I mean what would have been the problem if the 'system' had allowed for the BGC to be made before the sale ?
Again maybe I am missing something or was this too 'sensical' for the system so they had to complicate it?
It is incase the firearm they are wanting to buy is accidentally sold to another person.
The background check throughs FICS OSP has the FFL key in the Purchasers information then their ID info. Once that is placed in, the next step is the actual firearm with the serial number. So that specific background check is linked to the specific gun.
Hence, why FFLs cannot run background checks willy nilly, they are linked to a particular firearm with the particular serial number.
If the purchaser doesn't want to buy the firearm, guess what, another background check wherein they have to put in the purchasers info and the info of the particular firearm they are wanting to get.