Ok, just got off the phone with Centerfire and asked them some very specific questions about the build. The lady on the phone was very nice and cooperative.
US compliance parts include:
FCG (3 parts--though I forgot to ask about the make *doh*)
Gas piston
Slant brake
Buttstock
So that's the requisite 6 parts. However, if you want to put a regular buttstock and pistol grip on it at least one of them is going to have to be US-made to stay in compliance and be a legal so-called 'high capacity' gun.
The receivers are 1.5mm thick (as opposed to the 1mm Rommy guns) so expect some fitting and filing when installing a standard AKM buttstock. They are imported by TGI originally as a low-capacity gun. Here's the link to what these start out as:
http://centerfiresystems.com/akagunssr85c-01.aspxThe magwells are opened-up here stateside. Who did the work was not disclosed but since TGI imports them, does AK work, and is only a state away I'd hazard a guess and say maybe they do the work.
The compliance gas piston is apparently correctly pinned in place and not welded (like those drunken monkeys do at Century). The best part, IMO, is that the barrels are brand-spankin-new Bulgarian ones.
So yes, it is a
great deal.
Yes, you definitely can. You will have to remove the rear trunnion and replace it with either a Romanian or Polish rear under folder trunnion depending on on the origin of the stock set. The Polish and Romanian are the most commonly available from what I have come across. You will have to drill a few holes and do some filing (unless you have a milling machine) to accommodate the new trunnion. You will also need a couple rivets to mount the trunnion.
It's major surgery. Saying, 'drill a few holes and do some filing', while accurate, gives the impression it's far easier than it is. Yes, it is relatively simple for someone who is both experienced and has proper tooling but it's no cake walk for the average end-user.