I have a ARMS #3 fal mount that I converted to a #4 para mount. I welded drill rod through the back tab. It functions fine but the entire mount flops around on my receiver (enterprise arms) so it is pretty much useless for my rifle. I bought the mount used so it has some marks in the finish around the ejection port and a few other places.
It can be used on the para or you can (or I will at your request) cut the rod out for a standard FAL.
$70.00 shipped SOLD