get one of the books on carbines and research them out. rockola's are among the higher value carbines. was it through rebuild? that in itself can change the price by double. almost all carbines went throught post war (ww2 & korea)rebuild. if it has a bayo lug, flip safety, adj. rear sight,
'm' marked mag catch, 4 rivit guard, round bolt and a pot belly it is most likely a rebuild.
'm' marked mag catch, 4 rivit guard, round bolt and a pot belly it is most likely a rebuild.