I remember these from the '90s and almost bought one when it showed up on G/B, Auction Arms, or Ebay. Don't remember which site. Unfortunately, that did not happen. They were a clever modification of the AR7. I do not know how many were produced, how many were imported to the States, or what the current market value would be for one if there is such a thing for something this uncommon.
I did, however, scarf up a few photos of the Israeli AR7 rifle off the net at that time using my vintage WebTV browser, so here they are per DB75's request:
To be clear, I do not posses such an example, nor did I take these photos.