How long would you say it'd take to disarm America? To a point that had an effect on school shootings? What do you plan to do in the intervening, say, century or so?

You can't point to other countries with no guns and just wish it were like that where you are. It isn't, it won't be for a very long time, and to pretend otherwise is just wishful thinking.

Why would it take a century? Idk, 2-3 years? Like 5 tops.

Really? You genuinely believe that you could usefully reduce the number of guns in the US in 5 years?

"usefully" to what purpose?

How many functional firearms do you think there are in the US?

Like 1 per person.

You know there are about 300 million firearms in the US, and you think the government would be able to confiscate them all in 5 years?

That seems a little silly to me - especially considering the rate of non-compliance with previous registration schemes. In California more "assault weapons" were sold in the state in the three months prior to the registration deadline than were registered. In Connecticut there are people calling for armed conflict over a similar registration scheme, and the reports I've seen say that there are about 100k unregistered weapons there.

Regardless of how you feel about guns, to believe that America could be disarmed in 5 years is exceedingly naïve.

Logistically non-trivial? Sure. Impossible? I don't think so. For example the IRS manages to do an operation of similar scale every year, in a couple of months.