What's the truth: Revolvers and suppressors?

The S&W M39 (Mk22 Hushpuppy) was modified with a slide lock to make it a single shot for ultimate suppression.
I believe at least some of the tunnel rats in VietNam used suppressed 1911s that had a slide lock to keep the action closed after the shot was fired. All the firing noise had to go out the front of the barrel (and so through the suppressor) and there was no "regular" action cycling noise. The shooter had to unlock the slide and cycle it manually to load a fresh round, but he could do that at a time of his choosing.
 
I also put a can on my Dan Wesson .22. The result was about a 50% noise reduction. It was a 10” silhouette model with the gap set to nearly drag on cylinder (around .002/3”). We could shoot without ear plugs, but wouldn’t do it for extended periods.
 
Suppressors, in general, are kind of a cool trick. If you shoot with neighbors around, I’m sure the neighbors appreciate you using one. To me, they’re ugly, add unnecessary length and weight. But worst of all, they’re dirty, and gassy. Ask anyone who runs an AR platform. They do ok in a bolt action rifle.

I resent having to pay the government $200 every time I want to buy one. By law, I have to have a muffler on my truck, but I need permission to put one on my firearm? That what happens when the government gets involved in anything.

Suppressors are old technology. With electronic hearing pro that filters out loud noises and amplifies soft noises, why bother?
 
I believe at least some of the tunnel rats in VietNam used suppressed 1911s that had a slide lock to keep the action closed after the shot was fired. All the firing noise had to go out the front of the barrel (and so through the suppressor) and there was no "regular" action cycling noise. The shooter had to unlock the slide and cycle it manually to load a fresh round, but he could do that at a time of his choosing.
No, sorry, not true. The only VN era pistol with a suppressor and slide lock was the MK 22 MOD 0 (based on the S&W Model 39-2) and it was used exclusively by the SEAL teams. The so-called tunnel rats were Army and lots of guns were tried and a number of experimental models were proposed by the Army's Natick Labs and ACTIV group but none were very successful.
 
Suppressors are old technology. With electronic hearing pro that filters out loud noises and amplifies soft noises, why bother?
Mostly agree. They've been around for 100 years and not much has changed, in spite of what the manufacturers' would like us to believe. They are bulky and expensive and the paperwork is excessive. There are a few applications where they are still useful, however. Killing feral hogs, for example.
 

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