The MISR SA is a tough one. I have one, and it was hard for me to figure out the parts count. The consensus on the Dark Side (way before it was the Dork Side, Ian still owned it) was that there are only 3 US parts on the rifle itself (trigger group), and that the mag(s) it came with had US followers and floorplates. Bad news.
Anyway, I figured I'd play it safe, and bought a US polymer stock set from KVAR. That put me over 5 and I could use "off the rack" mags.
On monday I will put a Romanian folder on it. That's about it. I will still have 5 US parts (3 in the trigger group, pistol grip, forend).
Mine has never had a firing issue of any kind, except with the trigger. I had slap from the US parts. When I installed another supposedly better trigger, that "better trigger" did not work at all. After some drama I returned it, dremmelled off a tab on the US group I already had, put it back in, no slap, works every time.
Aside from 100% reliability, there are a few issues I have with it. I had it refinished becuase of the horrible, thick, blotchy paint job it came with. Also the front sight is canted, and I dropped an adjustable rear sight on to compensate.
I keep it around
1) for fun shooting
2) beacuse "it's cool"
3) I n the event I ever had to shoot up a car, the 7.62 FMJ round is far superior to the 5.56, 9mm, .40, .380, or 12 guage that round out the rest of my "stuff."