“What the heck is a bullet button? “
If you own a rife (in California) that has at least two of the three items deemed to make it “an assault weapon (AR-15 primarily, but also AK-47) (the items are a Collapsible stock, a pistol grip, and a flash “hider), you have to have a “fixed magazine that has to be only able to be removed by means of a “tool.” So some folks developed a mag release button that has a spring loaded, recessed button within the main “button,” that has to be depressed by means of a “tool” to release the mag. The tip of a .223 round can be used to depress that button, hence the name. Actually, I have found that a .22LR fired case works better, because you can leave it in place so long as no one in authority is watching.
Now, as of a year from now, CA will no longer allow the saie of these weapons, so evidently the “fix is a mag release that works when you remove that rear takedown pin and break the weapon. It’s all bullshit.
Your legislators need a hobby!
Knitting. Knitting is good.