Do 5 round non-detachable mags exist for the SKS? Also, what is the largest cap non-detachable mag for the SKS? Now that my son just got a Norinco SKS (never been fired!!!) from his grandpa I am addicted. I am definitely going to be getting one of my own (to bad my father in law doesn't have another one lying around to give to me) and putting on the Dragunov stock on it but I want to keep the original non-detachable mags for it. Any suggestions?