Most people who own a gun go their whole life without ever using it on another living human being. That hardly seems like people are just shooting each other on a whim.
You can commit a multiple homicide with any weapon. Just recently there was the incident of some perverted troon stabbing multiple people, in multiple different locations no less.
Regardless, owning firearms remains a god-given right and one protected by the U.S. Constitution. Too bad, so sad for your sisters but it still wouldn't matter even if their argument were valid.
So they dismissed your argument, which is actually entirely true and factual, without bothering to provide any meaningful rebuttal? Sounds to me like you won.
1. My sisters insist that guns just cause people to jump to firing even quicker
2. My sisters want to be unarmed and want everything else to conform to their wishes
lol the game was lost before it started. you're not going to convince women that guns are good. even when women accept that guns are a necessary evil they refuse to actually shoot dangerous people because they think their mind control powers should just force men to do whatever they want. when you take them to the range they just flag everyone all the time because obtaining what is essentially the super power to fatally harm other people is so foreign to them they can't process it properly
it would be more productive to argue with a brick wall instead