So I've recently become very interested in purchasing an M1 Carbine and if that weren't bad enough, my girlfriend decided she really likes them because they're small, light, and don't kick much. Only thing is, I don't know which makes are good and which to stay away from. I've been told that some aren't worth looking at. I was looking on Gunbroker to see what the price range is and found a few for what seems like good prices. I found an Iver Johnson, a Plainfield, and an Underwood, each for less than $500. Are these ok?