That depends on who you ask. People find different types of handgun better made than others. HK Sig Sawer Smith and Wesson Glock and Berreta are among the most prefered by most Americans.
I think large, heavy, expensive, custom made double barreled rifle. To the best of my knowledge, there was one handgun made in .600 Nitro Express, more as a curiousity than a usable handgun.
Glock, its well balanced, easy to clean, lightweight, and well made
The first auto-loading handgun ever made was the Laumann pistol.
The best protection against bear will not be a handgun, but an OC Pepper Spray made specifically for bears. There is no handgun that would be a guaranteed bear stopper. I have spent time in bear country, and we carried bear spray and a 12 gauge shotgun loaded with slugs.
Colt made a handgun model called the Peacekeeper.
Chinese
1450
You have made a statement, and then ask us to justify your statement? No. While Glock makes a good handgun, there is no ONE make of gun that is "the best" for everything.
It depends. A handgun that is made of all steel will not melt, but any handgun that has polymer or any plastic in it, the parts that are polymer will probably melt.
Open
Glock
Best is a relative term that has to many variables.