I was doing a little searching for rifles on the internet, and came across the SKS carbine. It seems like a great gun, and my dad has shown an interest in purchasing one, but I have a few questions. First, are they available at your average gun shop? Second, how much does the basic model cost - no scope rails, no modifications to accept AK-47 magazines, no extra features? Third, is it really as reliable as I've heard? Thanks in advance.