The following is taken from SmallArmsReview.com and will give you an idea as to the lineage of your receiver.
"Birth of the Receiver
The heart of the Vector Uzi is its registered receiver. These started life in 1985-86 when the flats were stamped and folded by Michael Brown, at that time the President of Group Industries. This company had gained a reputation in the 1980’s as a converter of the semiauto IMI Uzi into select fire. As the price of the IMI Uzi increased and the supply became spotty, Michael conceived the idea of making his own US-version and not being dependent on a foreign supplier. Further, he would be able to directly influence the quality and end up with a superior product. As an inside joke, the Group Industries Uzi’s were engraved with the model number HR4332. Mike selected this number as it was the House of Representatives law enacted in May, 1986 which banned newly-manufactured machine gun ownership by private citizens.
To gain additional funding for this very ambitious project, Michael teamed up with Roger Small, head of Scattergun Technologies (And the old Automatic Weapons Company). Roger agreed to partially fund it for approximately $250,000 providing he (Roger) received specific delivery schedules and exclusive distribution privileges.
In the end, Group Industries could not meet the agreed upon terms and Scattergun Technologies sued for breach of contract. After a prolonged length of back and forth moves from both sides, Scattergun Technologies finally won a judgment against Group Industries in 1993. Meanwhile, Group sought protection from its creditors by filing for several reorganizations under Chapter 11. This only temporarily prevailed, however, and in early 1995 the creditors ordered the assets to be liquidated under Chapter 7. An auction was held on 24 August 1995 the likes of which has rarely been seen before (MAC auction in 1976) and probably not since.
Among the many items up for bid included forming/stamping dies, boxes of parts, several full automatic weapons, one WWII WC24 command car, two M5A1 light tanks and 3318 registered - and fully transferable - Uzi receiver frames. There were nowhere near enough spare parts to complete these valuable receivers and some people wondered if the buyer had bought the proverbial “pig in the poke”.
The mysterious high bidder was #221 who paid $265,000 for the 3318 Uzi receivers along with an additional 109 Post-86 DS receivers. Including the 10% buyer’s premium to the auctioneer, the total bill was $291,500; this meant the unit cost for all 3427 receivers was $85.06 each. The buyer’s name was Marcos Garcia and he was the representative for one Ralph Merrill...President of Vector Arms.
Now that Vector Arms had just entered the Uzi market in a big way, Ralph had to figure out: 1) where to access a very large supply of new parts to complete these 3318 fully transferable receivers; and, 2) where to find a production facility to assemble the Vector Uzi? These two items became a world class nightmare."
These receivers were destined to become FA weapons, they just didn't quit get there. Here is a link to the full article. http://www.smallarms...idarticles=2867