SILENCER SATURDAY #13: Suppressed Pocket Pistols

by Pete

Good afternoon dear readers. Welcome to Silencer Saturday, where the only good barrel is a threaded barrel. Today we will stay small with a quick look at the fun of owning suppressed pocket pistols – specifically the GLOCK 43 with the Thompson Machine Poseidon. Thankfully the weather is improving up here in God’s Country – which means time to catch up on reviews and outside imagery rather than sterile white backgrounds.

I frequently describe the affliction that is Silencerosis as a sort of evolution. New buyers focus on the absolute quietest setup possible while veteran owners look to suppress every gun they own with a mission-appropriate* suppressor, even if it means sacrificing decibels for a smaller package. The GLOCK 43 is no where near the smallest pocket gun that can be suppressed, but I set out to find a perfectly-sized 9mm silencer – the Poseidon from Thompson Machine fits all of my G43 needs.

* A “mission” can be anything from possible defensive situations or pure range fun. You don’t have to be 007 to enjoy smaller suppressors.

Suppressed pocket pistols – GLOCK 43 and the Thompson Machine Poseidon

The beauty of most micro cans is that they don’t usually require a booster (Nielsen Device) to assist in cycling tilting barrel action handguns. This saves on weight, cost and most importantly length when you are attempting to build the smallest suppressed package possible. You will need a threaded barrel, however: I bought the SilencerCo barrel from Brownells here.

SILENCER SATURDAY #13: Suppressed Pocket Pistols

The Thompson Poseidon is a hybrid silencer that uses a short monocore baffle system followed by a single rubber wipe. The wipe is good for about 40-100 rounds before it needs replacing, but the beauty of a hybrid can with a monocore is that you can keep shooting without a functional wipe, just with reduced suppression levels.

Pictured Above: Black Panther Titanium Micro Blade by SMRT Gadget is a tiny knife that is ridiculously sharp. It also features a tight pocket clip and a dedicated glass breaker. I am not a blade junkie, but the Black Panther fits my EDC routine very nicely. Consider supporting their Indiegogo campaign here – there are only a few days left before the big launch.

Specifications: Thompson Machine Poseidon

At only 4.125” long by 1.25” in diameter and weighing in at a feather-light 3.8oz, the Poseidon offers sound suppression comparable to industry-leading silencers that are twice its size and weight. Using artificial environment and wipe technology along with a proprietary mono-baffle stack, the Poseidon features a unique design that helps to seal in the end-user’s ablative medium of choice until the suppressor is used; thus eliminating a major downside of wet suppressors. In other words, your ablative medium won’t run out in your pocket! As an added selling point, the Thompson Machine Poseidon is also a true multi-caliber suppressor, and is very quiet on .22lr, .25acp, .32acp, 9x18mm, and .380acp host weapons. The Poseidon easily and fully disassembles for cleaning, and includes the necessary take-down tools at no extra charge. The Poseidon 9mm is available in 1/2-28, 1/2-36, or 13.5x1LH thread patterns.

  • Caliber: 9mm (suitable for multi-caliber use)
  • Overall Length: 4.125”
  • Diameter: 1.25”
  • Weight: 3.8oz
  • Tube Material: 6061T6
  • Baffle Material: 6061 T6
  • Design: Monocore, Take-apart Tool Included
  • Finish: Anodized Matte Black
  • MSRP: $379

Silencing the GLOCK 43

Suppressors like the Poseidon work best when run wet ( using an ablative media to slow and cool expanding gasses). I still owe you all an ablative media comparison, but at the moment I prefer Inland Manufacturing’s dB Foam for the sole reason that it tends to stay put inside the silencer instead of spilling out the muzzle. Filling the Poseidon with dB Foam lasts for about 12 rounds, with the suppression reduced with each subsequent shot.

Thompson Machine Poseidon

Sure, the rubber wipe takes a beating, but it holds up better than you’d expect. Unfortunately, the ATF considers wipes to be silencer parts, so technically replacing them on your own is not allowed (even if it’s a simple process). But, any FFL can order replacement wipes from Thompson and instal them for you in less than a minute.

Thompson Machine Poseidon

I’m really liking this Federal Premium Syntech range ammunition for shooting suppressed – it’s both clean and quiet, staying subsonic in all but the longest barrels. The Hydra-Shok is a supersonic round, but is well suited for the G43 as a personal protection round.

Federal Premium Syntech and Hydra-Shok

There are three chambers in the Poseidon’s monocore, just enough to keep it really quiet with subsonic ammunition and a few squirts of liquid or foam.

Thompson Machine Poseidon

As an aside, the G43 received a sight upgrade from XS Sights. The new F8 Sights are bright, usable and easy to install. Brownells has them in stock here.

When using the right ammunition, a little ablative and with a fresh wipe, the Thompson Poseidon is nearly as quiet as any quality full sized silencer. It’s small, lightweight and easy to maintain. Most of all, when paired with a subcompact, pocket-sized pistol, it is a lot of fun in a tiny package.

GLOCK 43 - Thompson Machine Poseidon

TFBTV: Discreet Ballistics

Published on Mar 26, 2018

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We shoot Discreet Ballistics 300 AAC 188gr subsonic ammunition from an upper with a 1:7″ twist 8″ barrel into Clearballistics ballistic gel to measure velocity, penetration, expansion/fragmentation, and retained weight.

Many THANKS to:

KKM Precision: Gen 5 – Glock 17 Match 9MM with 1/2×28 Suppressor Threads×28-suppressor-threads/

All KKM barrels are made using certified 416R gun-barrel quality stainless steel bar stock. Our barrels are then heat treated and vacuum tempered to 42 RC. All of our barrels are CNC machined to obtain superior dimensional tolerances over stock. Our advanced proprietary button rifling process allows KKM barrels to offer greater accuracy over stock barrels. Our Glock barrels come with fully supported SAAMI spec match chambers for shooting factory or reloaded ammunition as well as lead or jacketed bullets. Unless noted all barrels are drop-in fit. Note: All suppressor thread barrels come with a thread protector.

Aerocharger Raptor

The Raptor brings it all to the table. A lightweight, small package, modular design that brings industry leading suppression to your favorite rifle. With flush mount and reflex options there is a configuration for nearly everyone. Utilizing our Spiral technology, the Raptor is constructed entirely out of titanium and is welded together creating a lightweight suppressor without using a heavy outer tube.

  • RAPTOR Standard Length – 7.0″
  • Diameter – 1.625″
  • Weight – 10.1oz
  • Build Welded Body Caliber – 5.56
  • Materials – Titanium
  • MSRP W/ Flush Mount – $945.00
  • W/ Reflex Mount – $1,145.00

Breitbart News: Trump DOJ Seeks to Hasten ‘Approval Process’ for Suppressors, Other NFA-Regulated Devices

President Trump’s Department of Justice (DOJ) wants to spend $13.2 million to hasten the “approval process” for suppressors and other items regulated under the National Firearms Act (1934).
The goal is to address a workload that has seen approval times for sales go from two months to eight months or more in recent years.

For example, to acquire suppressor an individual goes into a gun store, picks out a suppressor, fills out forms for the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), acquires passport photos, gets fingerprinted, and writes a check for $200, payable to the ATF. The forms, money, photos, and fingerprints are mailed to the ATF and the buyer waits roughly eight months to hear back. Following that approval time the buyer can pick up his suppressor, which is registered with the ATF.

ABC News reports the overloaded “approval process” has led to “a backlog of applications” for purchase/registration. READ MORE

Interested in seeing your silencer or NFA related product on Silencer Saturday? Drop us a line:


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2 of 20 comments
  • RUKdnMe RUKdnMe on Apr 01, 2018

    Ahhhhh!! At last, my G26 carried concealed in front will make me look like a Stud....But of course the frown on my face will say otherwise....

  • Missourisam Missourisam on Apr 02, 2018

    Suppressors, or so called silencers have been so conceptualized by Hollywood that an average citizen has no idea what the limitations are. A knowledgeable gun person has to cringe when they see a revolver suppressed, and when it is supposedly fired sounds like someone spit. Except for helping to protect the shooter's hearing, a suppressor is not really worth the money and the aggravation of the length and weight. The only suppressor I ever saw that worked like Hollywood portrays was a factory suppressed .22 short semi auto. After having had a barricaded standoff, the local law enforcement officials decided it would be a good investment to quietly shoot out street lights in a like situation. I finally saw a suppressor that really worked. With subsonic ammo, the loudest sound was the slide cycling. As far as being a deadly weapon, forget it as there was very little penetration.