Would this be CA Legal?

[abinsinia]

The Kali-key is an interruption device.
You can simply remove it and install a standard bolt carrier group and the gun functions as a semi-auto.

The kali-key is not a permanent modification because it comes out without any tools.

I guess you could debate if you need a tool or not to remove the pins and open the action. Why do tools matter ?

[ar15barrels]

I guess you could debate if you need a tool or not to remove the pins and open the action. Why do tools matter ?

You are asking about the difference between broken and not broken.