I have an opportunity to buy a Norinco MAK 90 with US Made side folder (folds on the right side of the rifle). How can I assertain that this rifle is pre 89 ban or pre - 94 ban since I live in a ban state - MA?
Here are some photos:
Check your trigger group. It appears that your stock and pistol group are two US parts, you need three more to comply with 922R. The Mak90 was designed as a ban gun and to deban it for any state needs the five US parts. A Tapco trigger group would qualify for three, but people are hesitant to remove their factory Chinese trigger groups for it.
As far as the date of manufacture for your rifle, and if it's compliant or not, I can't help you.