1. You dont know much about pressure pins huh?
This is an example of a press-fit pin, granted they are made of diff materials but you get the idea. If the pin is made correctly it will be nearly unbreakable.
One of the most common uses of press-fit pins are in these

I have yetto see a press-fit pin fail in those bad boys.
2.i agree the Type-C was def better built.
4. I doubt the NiB coating helped the Type-C, i have yet to see tangible proof that NiB is a better coating than phosphate. The SCAR does not use NiB and it won the The competition, the HK416 does not use a NiB bolt carrier, i have yet to see a proven general issue combat rifle that uses NiB bolt carriers. In 2003 when colt was working on the Type-C NiB was the new wiz bang gun coating, now most dont use it.
You also have to think, bright, shiny, reflective coatings are generally counter productive for a combat rifle when it may give away your position.
My experiences with NiB was that the coating sucks and causes more harm that good.
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