I read it as referencing the never-enforced firing pin microstamping law that California passed in 2007: https://en.wikipedia.org/wiki/Microstamping https://en.

I read it as referencing the never-enforced firing pin microstamping law that California passed in 2007: https://en.wikipedia.org/wiki/Microstamping https://en.wikipedia.org/wiki/Microstamping