[Fai Mao]

Carbon fiber is not for people that don’t pay attention to it all the time. When it fails it fails catastrophically and sometimes without warning. If you are an idiot bicyclist or one without teeth then you put a carbon fork on your bike because you don’t mind if it breaks. Smart cyclist still use steel or titanium. I would imagine smart gun owners do the same

http://www.bustedcarbon.com/

[mylife]

My Cousin did that in a bike race! Ouch!!
The thing disintegrated in a corner.

[doorgunner69]

Only looked into it briefly when I saw a mention of a lower made from composites, and it turned out to be an injection molded part with some reinforcement. A cheap alternative to machined aluminum.

This is not nearly the same as a carbon fiber part, assuming such a thing exists. All sorts of things would probably require metal inserts like pin holes and other load bearing surfaces. An answer to a question nobody asked. Not like an AR needs to be even lighter..........