Third Echelon Development

VSO Gun Channel tested out the Gas Cap and set up a simple comparison test.
Check it out!

No More Pistol Suppressor Gas to the Face || 3rd Echelon Gas Cap If you think about a handgun, it is different than firing a long gun. During the firing sequence you orient the action right in front of your face. Suppressi...

Check out our new video!
The Gas Cap redirects blowback from the gaps at the rear of your pistol downward, instead of into your eyes and face.

Third Echelon Development - Gas Cap™ - Suppressor Optimized G***k Slide Plate *Watch in HD* Demonstration contains many small particulates.The Third Echelon Development Gas Cap™ is a vital upgrade to G***k pistols paired with a suppres...

Gas Caps in stock now at AR15discounts.com!

Gas Caps for G***ks Gen 3-5 from our friends at are available on the site now! Looking to enhance your suppressed experience for your G***k, look no further!

Check out our Shot Show visit with James Reeves of The Firearm Blog!

A Pirate-Ninja Integrally Silenced Derringer?! At SHOT Show 2026, James Reeves takes a look at one of the strangest suppressed handguns on the show floor, a silenced derringer from Bond Arms. Known for th...

We are honored to have won the "Most Bizarre" award from Guns America for our integrally suppressed derringers!

Check out our Integrally Suppressed Derringers at Shot Show!
booth 72617

For everyone asking for .45 🔥

The traditional round can architecture does not scale on these double-barrel derringers with the bigger bores. A few things ended up requiring an entirely different design approach... and the result is incredible!

Some video of the integrally suppressed derringer prototype!

Integrally Suppressed Derringer - Using a double-bore silencer Follow us to stay updated... much more to come!Instagram: 3EDEVFacebook: Third Echelon DevelopmentReddit: 3EDEV

Knurls for the gurls ❤️

Not the first, and not the last iteration. But its close! The internals are dialed. Crazy quiet. But next tubes are getting knurling 🙂

I'm doing something...
Two rounds, no action noise, keep your brass.