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The Steyr AUG has always been fun to shoot, but anyone who has run one suppressed knows the factory setup vents gas loudly right next to your face and stays overgassed no matter what. This Heresy Design conversion kit was built to fix exactly that. It swaps in a 14.5" 5.56×45 NATO barrel assembly with a restrictive 3-setting adjustable gas system, letting you dial back backpressure and gas-block noise so shooting suppressed feels a whole lot more civilized.
The barrel is made from 41V50 steel with an Isonite finish for durability, spun with a 1:8 twist that handles everything from lighter varmint loads up to heavier 75 to 77 grain match bullets. It ships as a complete barrel assembly with an A2 flash hider up front and 5/8×24 muzzle threads, so mounting a can or another device is straightforward. Owners running it suppressed report it gasses beautifully on the low backpressure setting, with minimal gas kicking back at the shooter.
One of the best parts about the AUG platform is the tool-free barrel swap, and Heresy Design leaned into that. Installation takes under a minute and requires no permanent modification to your rifle. The kit fits both Standard and NATO stock A3M1 receivers, and it includes anodized aluminum quad rails with heat isolators, giving you real estate for optics, lights, and other accessories that the stock AUG never made easy.
Between the adjustable gas, the threaded muzzle, and the added rail space, this kit addresses the two biggest gripes people have with the AUG: it was tough to suppress cleanly and tough to accessorize. If you want to unlock what your AUG can really do at the range or in the field, this is the piece that gets you there. It's backed by a limited lifetime warranty.
Yes. The kit is designed to fit Steyr AUG A3M1 receivers using either the Standard or NATO stock. It installs without any permanent modification to the rifle.
The 14.5" barrel uses a restrictive 3-setting adjustable gas system that lets you cut down backpressure and the gas venting noise the factory AUG barrel is known for. That means far less blowback at your face and a quieter experience at the ear when running a suppressor. Owners note it gasses cleanly on the low backpressure setting with common cans.
It is. The barrel comes with 5/8×24 muzzle threads and ships with an A2 flash hider installed, so you can run a suppressor or swap to another device without extra work.
The AUG platform allows tool-free barrel swaps, and this kit takes advantage of that. Most owners have it installed and range-ready in under a minute with no gunsmithing required.
| UPC | 850055721029 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HB16A |
| Length | 14.5'' |
| Model |
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