As the picture suggests, it's a lemon; proceed with caution
http://www.m1carbinesinc.com/carbine_iai.html
http://www.calguns.net/calgunforum/showthread.php?t=82784
http://www.militaryfirearm.com/Forum/showthread.php?22728-IAI-M1-Carbine-issues
http://youtu.be/uhB42gZEK8Q
http://youtu.be/G3PRrOBLNoY
http://www.fulton-armory.com/m1-carbine-parts.aspx
http://www.thecollectorsource.com/page/1227235
http://riverbankarmory.com/parts4.html
http://northridgeinc.com/store/index.cfm/c128/i109
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