So I am going to completely expose my newbie-ness... I see all kinds of cheap SKS rifles that seem to be in great shape. Whats the deal? I am not familiar enough with long guns to be able to tell by photos, but they are a large caliber semi-auto that cost about 1/4 of what some of the good bolt action long guns go for. Can you hunt with these guns? Is the price just due to craftsmanship?