How I can get this?

[ke6guj]

It's a pen gun and a pen gun is an AOW.

Can't own it, unless you get approval from the BATFE.
Also need to find a CA FFL/SOT willing to do the transfer.

Actually, it isn't an AOW per the feds because it fires when converted into a "handgun shape" before you can fire it.

Now, is it illegal in CA? What is the definition of "pen gun"? I dunno. It'd probably be caught under "any firearm which is not immediately recognizable as a
firearm".

I'm sure Jack will be along shortly to explain, but you can AOW it and get it in.

Who, me?

Even if it was a pen gun AOW, the AOW exemption in CA has a pen gun exemption to the AOW exemption. So, no AOW pen guns in CA. Now, an AOW flashlight gun may be a different story