I bought from someone who got it from an estate sale. It looks like new condition. I did all kind of searches, the receiver , is from a high end AK 47. I can't finf the Bullpup manufacturer, At one point I found the Sights , I think cost a few hundred. for the oversized sights, which I liked, because of senior vision. I have not found any pictures online that look like it.
Check on the flash hider where it gets wrenched, there would be a divet mark where a pin would be driven in and welded over. If there isnt, then you should be able to just twist it off by hand just slightly.