Depends on where you look, I guess . . . most have no trouble finding what they want, with the exception of all the ammo or loading supplies they need/want at the moment.
"Shortages" of popular handguns have been in effect since I started in the sport almost 40 years ago. Used to be driven to a great extent by the companies fronting pre-production models to gun magazine writers who splashed them all over the covers and did their best to convince us we couldn't live without them, only to find out they wouldn't even be available for a year or more and then at limited quantities. Create a big back-order demand and frenzied sales before they even hit the streets.
Unless you're into modern Colt revolvers (since they are out of production) S&W and Ruger, and a couple of others are still cranking out plenty, though some of us prefer the older models before political correctness and attempted lawyer-proofing . . .