@georgia @scathach My disagreement here is twofold:
1) the only conflict humanity should ALWAYS avoid is one between the sexes. In any other conflict, if one side is wiped out, in the grand scheme of things nothing happens. In a conflict between the sexes, a bad outcome means extinction.
2) the past two decades have shown how, when women are given big legal advantages and feel there will be no consequence to abusing said advantages, especially to the detriment of men, they abuse them horribly.
Women are not less likely to do evil, they're more risk-averse, so crime-inclined women usually just get their boyfriends or brothers to do the violent part of the crime for them. In this scenario, they'd do it themselves, since they'd have the advantage.
As for the non-morally-related part of this scenario, this level of gun restriction would only affect law-abiding citizens, criminals already get their guns outside the legal system, be it by stealing them or buying them illegally.
Handmade weapons aren't common in places where commercial weapons are easy and cheap to get, but they're extremely common and abundant in places where guns are very expensive or complicated to obtain. Even in countries that are somewhat normal, areas that devolve into warzones without the availability of guns matching that status see mass production of homemade guns, as is the case in the Brazilian favelas, where police raids consistently capture huge amounts of them, of different levels of quality.
There are also plenty of WWII era designs like the M3 grease gun or FP45 liberator that are made to be manufactured extremely easily, and can be made at any workshop. Hell I've seen an AK-47 made from a shovel, the guy only bought the barrel and firing pin rather than make them himself because of legality.
Finally, there's currently a 4:1 ratio for murder victims male:female, because criminals generally believe they're more at risk by leaving a male victim alive. In your scenario where women have guns and men don't, criminals will do the exact opposite and ambush-kill female victims to ensure there's no risk to their own health. If I was forced to fight someone who was armed and I wasn't, I would ambush them and immediately either destroy their hands or just kill them, and this is the same mindset that anyone seeking to commit a violent crime would have. There would be no more "punched and robbed", it'd be "knife to the neck, then robbed, and now I have a gun" for any criminal. Plus, within five meters, a knife or hatchet has an advantage over a gun.
As for "every woman carrying a rifle", ironically, banning handguns and allowing everyone to carry rifles would be a good way to greatly reduce gun crime. Most gun crime is done with handguns that can be concealed. You don't see guys with FALs robbing others of their cellphones and wallets.
If you want a society where the combat capability difference between men and women is smaller, go for polearms, not swords. Swords HUGELY benefit male anatomy, because they were designed by and for men, and a small difference in upper body strength and arm length tips the balance a lot. If we weren't in different hemispheres I'd get two practice swords and show you how much of a difference it makes in sparring. Polearms are much more lower body reliant and compensate reach, it's why samurai clans trained their women to use naginatas and not another weapon.