Umm... Did someone with M14 experience look at it? Bolts often need to be fitted. It would be unusual a GI bolt could not be lapped in and fitted.
Don’t mean to hijack the thread, but while I’m not a guru of the m14, based on my reading too much lapping would be a “bad thing”. The amount of lapping I need I feel might be too much.
USGI bolt
Even with the barrel off and the bolt stripped, it no better than that.




















































