That is a good point, it wan't the firearm, it was the person, years ago a study was done between Vancouver, B.C. and Seattle, Washington, the rates of violence were pretty much the same, in the U.S. more firearms were used, in Canada it was knives and other weapons, as firearms are restricted there, yet the adversary attempts to deceive people that is the inanimate object that does the harm. I see rumblings about banning knives etc, blaming the inanimate object for the evil intention the person has given over too. The devil has been very successful in conning people into thinking he is not the cause.
If we are His and are watching as He instructed us to do, we know that in these days as He is pouring out His Spirit more than He ever has, His people will be getting better and better, the adversaries will be getting worse ans worse, and then in these days we will "need a sword" or the means to protect ones own.