[Ron Wood]

You got it Doubs. It is the same sort of thinking that started the practice of not giving out the full serial number of a Luger for sale. Dealers, and others, were listing their guns with the full serial number and selling with an inspection period. Some slobs would buy the gun, take off parts that matched the last two digits of guns that they had that were mismatched, then send back the gun they had purchased with replaced parts. You don't have to be a victim too many times before you start taking measures to keep from getting shafted again.