I am making some though. Curiously it is still legal to "roll your own" in California.
Be afraid Feinstein, be very afraid.
80% lowers are definitely on my list.
I also installed digital readouts on mine. Not cheap but works really great. I've learned a lot.
I used to be a member of CRPA. We pronounced it “Crappeh”, and they were way more useful and aggressive than the NRA ever was.
Every few months they’d send out a synopsis of their court battles and the outcomes, which was awesome.
They had a cool bumpersticker. IIRC, it was a California flag but instead of the bear it bore a rifle, but it has been a while.