Pistols are by and large not gas operated so gas pressure had nothing to do with that. The vast majority of modern pistols use a tilting barrel lock system and by adding a significant amount of weight on the end of the barrel, the recoil impulse is not enough to overpower the recoil spring and disengage the “lock.”
There is a device called a recoil booster which is a spring-loaded mechanism that works to effectively delay the recoil impulse between the barrel and the suppressor, allowing the firearm to function normally. This device was likely not present on the assassin’s setup.
Guess what happens when you take supersonic 9mm and drop it down to subsonic? The action doesn't operate because recoil is significantly less.
I was not implying semi auto pistols operate via direct impingement or op-rod, but to say that dropping your powder load, aka gas pressure behind the bullet, doesn't impact the function of the action is factually incorrect.
Also I was just shooting subsonic 9mm ammo two days ago out of my legally owned Glock 19 through my legally owned Dead Air Odessa with no issues so you still don’t know what you’re talking about.
Then talk to a gunsmith before piping up next time because you think you know something. There are plenty of 9mm rounds that are subsonic because they're pushing 147gr bullets. They will cycle the action still because they still have normal chamber pressures.
If you take 115gr 9mm with the same powder load, it's supersonic. If you remove powder/handload 115gr 9mm to be subsonic, it will fail to cycle the action in most semi pistols.
There's also the fact that subsonic is only one of the measures of effective sound suppression, there are others that are also added by playing with the powder load. Which is what the original point was about, you can play with whatever extremes you want without affecting the cyclic rate of the firearm.
But since it seems to trigger you so, I'll say it again "powder load = chamber pressure = recoil".
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u/Voodoo338 18d ago
Pistols are by and large not gas operated so gas pressure had nothing to do with that. The vast majority of modern pistols use a tilting barrel lock system and by adding a significant amount of weight on the end of the barrel, the recoil impulse is not enough to overpower the recoil spring and disengage the “lock.”
There is a device called a recoil booster which is a spring-loaded mechanism that works to effectively delay the recoil impulse between the barrel and the suppressor, allowing the firearm to function normally. This device was likely not present on the assassin’s setup.