LuckyShotGood products but may take some time make.
Also, may be an issue with 922r but it could already be considered iffy due to the existing Tapco furniture.
Copperhead makes pistons and Murry’s Gun can supply the remaining parts for 922r (Trigger, Hammer & Sear). Murray or Kivarri can install those parts as well.
Not exactly sure of the parts count for an M/D but if you replaced all above you’d be at 6 US (Stock, Hand guard, Gas Piston, Trigger, Hammer, Sear). The total count of all US Parts would be subtracted from the ATF’s list of designated import parts that can be replaced (14 or so depending on the classification of the parts count of the M/D models). It’s something like less than 10 imported parts after you’ve added your US parts.
There are online resources that should be able to define the parts count for various models.
You could also possibly modify some import metal mags as AK’s allow the mag to count towards the US Parts (Follower and Floor plate). Zastava USA makes some of these now. Usually SKS 922r only allows for the mag body to be counted as standard SKS 10 rounders don’t have what we normally consider a “Follower” and the really don’t have a floor plate…AK mag SKSs may have exceptions.
That said, if you plan on going this route,
please do your homework and find out how 922r applies to that particular breed of SKS.