I have a nice M1 Carbine by Saginaw with a Buffalo Arms barrel that does not have the bayo lug rework on it but does have the adjustable rear sight. It was having a problem as every time I would (try) to shoot it - every round would fail to chamber all the way and the bolt would not close. I brushed it out and small rings of brass were coming out with the brush and I decided that there was a small ring of corrosion right at the mouth of the chamber and that the brass would get gripped so hard by it that, it would get ripped off during extraction. Today, I put a stainless steel brush on a rod and spun it with a drill in the chamber area. When I got to the range, I found that that worked just fine and I shot about 10 rounds without issue. Then for some reason, all the parts of the bolt decided to disassociate themselves with the bolt. The extractor, extractor spring and plunger and the ejector all cam flying out. Amazingly enough, I found all the little bits and pieces but am not sure why the bolt decide to come apart like that. That would have been a real drag if somebody was shooting it in a combat situation. So why did it all come apart?