My m16 story, I've owned a factory colt m16a1 since 2008, but they have gotten so valuable I seldom shot it, been looking for several years for a cheaper conversion to use as a blaster. 3 months ago found one local to me for 9,000 and that seller had a friend with one for sale also, just last week got the papers off on the second one that is a SP 1 colt, I gave 12,500 for it , so bargains do exist out there. The first one I have a question about. The only markings on the receiver are for the local class III guy (back in the 80s) who converted and assembled the gun, there are not any factory markings on the receiver at all that I can find, the gun was painted with black epoxy paint I am having it duracoated matt black. How could he get a receiver without any factory markings, he added his name and company name and model number and serial number and it is legal on a form 4, but apparently he got a blank receiver and finished it, the gun has a factory colt A1 upper on it, runs great and my other colt and other brand uppers fit on it just fine. The SP1 was converted by the same local guy and has a A2 heavy upper on it, shoots fine also. So I have papers in on 2 conversions and when I get them back I will probably sell one of the guns, I want 2 m16s but can't justify having that much money tied up if I keep all three. If I decide to sell I will post on here first, right now leaning towards selling the factory m16A1 if I can get 24,000 for it, but haven't decided for sure yet. Bargains do still show up occasionally.