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gyvel · January 13, 2012, 07:35 AM

I think we may be overlooking the fact that any competent machinist could have milled the flats to make the receiver completely hexagonal, so the fact that it isn't partially round may not matter. The receiver seems to be color case hardened.

January 13, 2012, 07:35 AM	#16
gyvel Senior Member Join Date: August 30, 2009 Location: Northern AZ Posts: 7,172	I think we may be overlooking the fact that any competent machinist could have milled the flats to make the receiver completely hexagonal, so the fact that it isn't partially round may not matter. The receiver seems to be color case hardened. Last edited by gyvel; January 13, 2012 at 08:13 AM.