Unless you have replaced more parts with U.S. made parts than you mentioned to make your SKS "conversion! 922r compliant you might want to take your post down until you do some research; n U.S. Code 922r. Also, your SKS: s no lnger a Curio when c with the modifications you made.
No need to invite a visit from the men in dark suits story ng black SUV's
cheap shooter, the OPs SKS is 922R compliant. the removal of the stock, handguard, magazines body and follower drop it into compliance levels. the only exceptions are yugoslavian SKS that have a muzzle brake and require an extra part removed/replaced.
perhaps you should take your post down until you've done more research. here's
a link to a site that offers an interactive spread sheet to show whether your SKS is compliant or not.