That's easy - if I could only have one handgun it would be an HK P7.
I no longer have a P7 precisely because I have more than one handgun. The P7 manual of arms is so different from any other pistol that I could be proficient with the P7 or with other pistols, but not both at the same time (and, yes, I was embarrassed at a Glock match trying to strip a mag out using the heel mag release and then trying to release the slide by squeezing the grip).
hammer.
That’s a beautiful gun, but get you a plastic gun for EOTWAWKI.
G17.
Probably the gen 4 that I already have.
That’s a beautiful gun, but get you a plastic gun for EOTWAWKI.