"A hammer or trigger on a S&W is like a turbine shaft in a jet engine."
What are you talking about?
gd
P.S. "He went on to state that in several hundreds of thousands of rounds he never had a mim part fail."
This is the quote from your first picture posted.
Where exactly does it state that "MIM parts don't break?"
P.P.S. "I have three PC revolvers, have stripped them, and they are not cast or MIM."
PROBLEM SOLVED!