I recommend you do some research via some excellent reference books like "War Baby". Most carbines have been through an arsenal overall at least once, some several times. This is why most have a bayonet lug and adjustable rear sight. When originally manufactured the majority had no bayonet lug and a flip up rear sight. So do you want one for collecting or for a shooter? The price you mention of $795 isn't bad if the carbine is in excellent condition and with the looming AWB prices are only going to go up. There is a dedicated forum for the M1 Carbine you may well want to check out also.