Heresy Design

Heresy Design Heresy Design is a manufacturer of firearm parts and accessories.

Our products include conversion kits for the Steyr AUG, the Vendetta Chassis for the R***r style 10/22, and the Silencer Timing Device.

06/05/2026

The Resonance Silencer with 22 subs is quieter than the dang wind.

Small tolerances matter when dealing with muzzle alignment.The STD is precision machined to provide a clean interface be...
06/01/2026

Small tolerances matter when dealing with muzzle alignment.

The STD is precision machined to provide a clean interface between the barrel and muzzle device for more repeatable installation.

A quick update for the AUG® crowd.We’ve added more 9MM AUG® configuration options to the current Heresy lineup, includin...
05/29/2026

A quick update for the AUG® crowd.

We’ve added more 9MM AUG® configuration options to the current Heresy lineup, including support for both Standard Stock and NATO Stock setups.

Compatible 9MM magazine options are listed on the site as well.

Details are available at Heresy Design.

No REGULATED goods for sale via FB or IG

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05/25/2026

Barrel, gas system, and lock-up matter most. Our conversion kits focus on the parts that actually affect performance.



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No REGULATED goods for sale via FB or IG

Subsonic capable. Suppressor tuned. Built around a 3-position gas system to reduce blowback and piston pop, our convers...
05/19/2026

Subsonic capable. Suppressor tuned. Built around a 3-position gas system to reduce blowback and piston pop, our conversion kits will get you rolling with 300 BLK in under 60 seconds.



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Carbon and lead buildup are unavoidable, which is why serviceability matters in a rimfire suppressor design.The Resonanc...
05/12/2026

Carbon and lead buildup are unavoidable, which is why serviceability matters in a rimfire suppressor design.
The Resonance uses a removable monocore that can be accessed quickly for routine cleaning and maintenance.

The AUG® platform still does something most modern rifles struggle with.Compact overall size without giving up barrel le...
05/08/2026

The AUG® platform still does something most modern rifles struggle with.
Compact overall size without giving up barrel length.
That balance is why the platform has stayed relevant for decades, and why modular upgrades matter.
Heresy conversion systems and accessories are built to expand capability while keeping the platform true to what makes it work.

No REGULATED goods for sale via FB or IG

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More Capability. Same Platform. Caliber flexibility without re-zero headaches or gunsmithing. Swap and keep shooting. He...
04/30/2026

More Capability. Same Platform. Caliber flexibility without re-zero headaches or gunsmithing. Swap and keep shooting. Heresy Conversion Kits FTW.



The current Resonance promotion closes tomorrow.If you’ve been meaning to take a look, details are available on our site...
04/29/2026

The current Resonance promotion closes tomorrow.
If you’ve been meaning to take a look, details are available on our site.

04/27/2026

Check out how easy it is to service the Resonance Silencer.

Also only a few days left on our promo for 3 folks to get one of these for themselves.

Address

212 W. Ironwood Drive , Ste. D #205
Coeur D'alene, ID
83814

Telephone

+12089980192

Website

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