Try that with a Glock
I heard about this from my Brother who’s MOS was small arms repair in the Army. We were showing him my Son’s new 92 and he said he had a Sgt. that could grab the pistol and pull the slide off in a flash.
You can grab a revolver’s cylinder, put your hand between the hammer and slide, push a 1911 out of battery by just pushing the front.
You know what?
I would not try any of them if the chips were down.
Theoretically possible, but serious strength and unusually precise finger positioning are required: first the disassembly latch release button spring must be overcome, then the disassembly latch must be rotated down, pushing the recoil spring guide forward. Neither the latch release button, nor the disassembly latch tab, are very large.
All rather difficult to get done, in the small space of time available before the person holding the pistol can react and pull the trigger.
Spring stiffness can vary; some latch release button springs are stronger than others. Same with recoil springs. Explains differing results - and the varied opinions.
It’s also possible - as yarddog mentioned - to disable a revolver by grabbing the cylinder.
It is also possible to disable short-recoil autoloaders (Colt’s Government Model, Luger P08, Hi Power, Walther P38, SIG P226, Beretta 92 and Taurus clones, etc) by pushing the barrel backwards until the disconnector cams the trigger bar away from the sear. But plenty of force is needed: disassembly instructions for these arms often recommend pressing the muzzle against a firm flat surface - like a doorframe or tabletop.
Don’t count on such gambits in close combat.
When I worked for civil service, we received some very rudimentary training in self defense. Our instructor was a national Karate champion so I trust his advice.
After a day of instruction, I think we learned the most in a question and answer period. One question was what to do if a person holds a gun on you.
He said if he knew the guy was going to shoot, he would try something but otherwise if it was a gun, do what he says.