No, the question is why does an ordinary citizen need a clip with 100 rounds locked into a semi-automatic rifle?
Why not? It saves time on reloading. It doesn't turn a person into a murder.
Deer hunting with such a thing would seem to be ridiculous. It has no other purpose than a weapon for mass murder, or something fun to do at a shooting range.
You do realize you are banning the fun at the shooting range with your sweeping ban? And for what? Almost nothing.
And then, the next murderer uses a 30 round clip so it must be banned, and then a 20 round clip, and then a 10 round clip. Turns out you were never interested in a 100 round clip at all.
Here's a hint: arbitrary (number) law is a usually bad law. Just avoid it entirely.
I'm sure it would be fun to toss grenades and fire the main gun of a tank at a shooting range as well but I think it's pretty obvious why that isn't allowed.
Because it can't be directed at a single individual. That's the criteria for a citizen's defensive weapon.
Fun vs. mass killings, hmm. Lets think about that one a little.
That would be a valid comparison if fun on a target range was related to mass killing.
A weapon "designed for rapidly firing at human targets from close range."
You've just described every firearm and none of them. Your description is useless because it doesn't distinguish an assault weapon from any other.
Only on the point of assault weapons.
Which, as you show, is every weapon. Or none, but I know you don't have that in mind.
There should be an obvious limitation for ordinary civilians to not own weapons designed for military engagements that can be used for mass killings.
Again, you've described every firearm and none of them. Any firearm, as history has proved, can be used in a military engagement. They could also all be used in a mass killing.