Piece Part Reliability?

[bountyhunter]

Originally Posted by Richard L Shield

NASA uses MIM parts. Its not only for guns.

True, but they X-ray theirs after molding to verify no internal voids or defects.

[bountyhunter]

Originally Posted by Don

MIM can be very good stuff, my hammer on my S&W revolver is MIM. I have read in some trade mags that you can get 95% density with MIM. Many 1911 lovers seem to hate some MIM parts, and I do not know if it is experience or fear.

It's because some makers (Kimber and others) used MIM of poor quality on long, thin parts which will fail if they have a defect.... and had many failures. A grip safety, extractor, and slide stop in a 1911 are stupid choices for an MIM process. Especially, considering the poor quality of piece part suppliers.