Third Echelon Development
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In pursuit of peace and quiet.
First production batch of ISD9 Cans is completed and passed QA. Waiting on packaging and one more key component and we can start shipping!
Should we be taking preorders?
Ultimate suppressor G***k host build?
Third Echelon Development Gas Gap for NO blowback in semi, and a Hush Puppy Project ®️ SLD slide lock for that super quiet shot. 😎
3D printed wipes - WIN.
How much blowback does a suppressed pistol actually send into your face?
We test it, and also test how much of a difference a GAS CAP can make.
See the Full video on Youtube
(link in bio)
08/15/2026
Just finished editing a video showing how much blowback comes from shooting a suppressed pistol! Probably a lot more than you'd assume.
Check it out!
How much blowback comes from suppressing a pistol? - WHITE MASK TEST Using paper masks coated with spray adhesive, we test how much unsp...
A couple shots with the double barreled ISD9. No action noise, no brass ejection.
07/30/2026
07/24/2026
ISD9 is almost here!
One of the unique aspects making this absurdly quiet for its size is the double bore. Each shot alternates which bore becomes a temporary reflex chamber aiding in early pressure drop.
Get on the notify list at 3edev.net
Double-barrel Compensator prototype for a Derringer
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Broken Arrow, OK
74014
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