IT is an infringement on the Second Amendment rights of Californians.
It is a device that is put in where the magazine release goes, and makes you have to use some sort of "tool" in order to change magazines.
This is supposed to make the liarcrats and their ripoffcon bed partners happy, and better rested, for it is meant to make these career politicians feel more readily electable by their brainwashed gun-fearing constituents, oh and did I mention the passage of this ruling just made us 50,000 points safer. Hurray for effective government in action. Now excuse me please while I go retch in to the commode.
Edit: I see that I am beat, well posted sir. What the gentleman above me states, yes... veritably, I have one of these "bullet buttons" on my 995TS, Turners is one of the few shops (a small chain of shops) in Southern California regularly 'importing' them from the free U.S., modifying with this reversible feature (in case of out of state moves), and then selling these plucky carbines to us lowly pondlife here. Well, what? That is what my government says I am... untrustable, guilty, pondlife scum which needs to quickly move aside for this glorious, honorable and pure, newly arrived "undocumented worker" ... the "glue" of my society here, according to the politicians
I am supposed to look at them as my example and to be more like them....
( I mention this, because the shifted demographics here are in large part directly to blame for the allowance of the passage of these restrictions, for the development of our fascist police state life here now)
Seriously... where is my barf smiley...
Oh, and to attempt to partially answer your question here Fq400, welcome to HPFF by the way and sorry for my rant, I am sure you can likewise feel the pain .... THe button that Turners uses sits within the regular magazine release button "well", so it small and not the same as the standardized AR platform bullet buttons, indeed. If you are going out of state to use your rifle then the mag magnet may or may not fit for you, I can't be sure but have wondered about that myself. In the event that the ruling is overturned (or an extended lawless situation, whistle whistle)
then a disassembly will allow you to reinstall the standard magazine release button, I have confirmed.
Meanwhile, you best bet in my opinion is to use one of these, I have a few of both: (before that I just used a bic pen or a bamboo skewer)
vomit breathed leadspewer