I’m considering trying the compmag her in Cali so I can take off my fin on the grip. Anyone try this?

Been a minute since I posted anything... Anyone a CA Sub2K owner and trying to figure out what to do? I have a bullet button on mine but not sure what options there are to make it CA legal come July. I'm told I can pin the stock so it doesn't adjust and put a wrap around grip on it and be...