Whenever a politician or journalist suggests passing X law that regulates technology/the internet and they get terminology and/or the material facts wrong people here on slashdot get rather up in arms about it. It's because not only is the law they propose is unlikely to work, but also its makes it very obvious that they are completely unknowledgeable out the technology they are attempting to regulate and thus are unqualified to do so.
Gun control laws are no different. Claiming that owning more than X amount ammunition or possessing magazines greater than Y capacity should be prohibited because you could use it to shoot up a bunch of people is is would be like the MPAA/RIAA proposing that each household should be limited to owning 100 gb worth of data shortage and only 2 gb for each smartphone or portable media device because nobody can afford to fill such devices with legitimately purchased content and if you own devices greater than that capacity, then that only means you will use it for piracy. Add bonus points if the proponents of such a law starts substituting the words "floppy disk" for "hard drive" and "SIM card" for "SD card" in their talking points.