in places like california you need a non detachable magazine
Bullet buttons are jsut a way manufacturers get around that requirement
thats a fine example of polishing a turd. the law at question which makes "bullet buttons" useful is so stupid and useless as to be laughable.
the mags are not non-detachable, they just have an irritating hole you have to poke a bullet into to make the mag drop. the "bullet button" is just a magnet on a stick with a button that fills the hole so you have a removable magazine catch button.
the intention for having the hole in the side with the mag catch at the bottom is not to make the mags non-detachable, but to make mag changes slower. they could have done the same by requiring all mags be coated in Acme brand axle grease, or forcing us all to wear boxing gloves, all the time.
if i intend to commit a crime with an AR, the FIRST step is to install a standard magazine catch (available from many retailers, perfectly legal to own, until you install it). if having a really annoying magazine catch prevents a single crime, i propose this crime could have been prevented by requiring all gun purchasers to pinky swear that they wont shoot up a school.
Where is that "sensible" gun regulation? after all no mass child murder plotter would violate the sanctity of the pinky swear?
that would be monstrous!!