I sold an MP5 to a customer a few years back, and with the increase in prices, he wants me to find a buyer for it. I pulled up my records and also examined the gun, and nowhere on it does it show anything other than as a factory gun(by markings). It has the Sterling, VA stamp on the mag well, but it isn't an overstamp by appearance. HOWEVER, the Form 4 lists is as a 94/MP5, and the gun itself is a clip-on trigger assembly, with a fake pin showing. The manufacturer on the Form 4 lists HK, with no indication anywhere of anyone doing the conversion, which obviously was done at some point. My Form 3 from the seller to me also shows HK as the maker, and the model being a 94/MP5. It is a four digit S/N gun, so I'm sor of mystified as to who made it, and exactly how to advertise it. He has fired it some, but not much, and it has always worked flawlessly. I also sold him a Liberty Mystic X can with the 3 lug bayonet mount, but he's never used it, but wants to sell it too. In every other MG I've ever had go through my business there has always been a secondary maker listed, like Fleming, Erb, Wilson, etc. to show who did the conversion, but not this one. I guess I didn't notice when I originally sold it to him, and too many sunsets have passed since then for me to accurately remember.