Full Auto, .45ACP Full Size UZI Closed bolt Configuration

I got this bolt from a vendor at Knob Creek I think in 2003.  It was in a bin of other IMI UZI parts.  He didn’t have anything labeled and probably didn’t know what it was.  It was brand new when I got it and I knew right away it was rare as I had never seen or heard of one and now 20+ years later, I still have never seen one of these for sale or even mentioned (as far as original goes).  There may have been some custom ones made but this one I’m pretty sure is original IMI.  I knew it was going to have a high cyclic rate which I don’t care for but I bought it for my collection.  I have only fired it on two different occasions.  I did this documentation for future reference.

Why?  I think these were made for the US LE market since .45ACP is obviously a popular US round and at the time the bolt was made, IMI was also making closed bolt UZI’s in .40SW to compete with the MP5 since it was closed bolt.