Outfit Your AUG With the Best Parts

The Steyr AUG is an iconic bullpup rifle—compact, accurate, and battle-proven. But even great rifles can be made better. That’s where Heresy Design comes in. Specializing in premium AUG parts and accessories, they offer everything from caliber conversion kits to precision-machined rails, ergonomic controls, and suppressor accessories. Each product is engineered with tight tolerances, rugged durability, and the needs of serious shooters in mind.

Whether you’re looking to tailor your AUG for competition, tactical work, or multi-caliber versatility, Heresy Design delivers gear that works as hard as you do. Our team at Midnight Arsenal Box is going to break it down so you can keep a lookout for their products in our next drop!

Switch Calibers in Minutes

One of Heresy Design’s flagship innovations is their AUG caliber conversion kits. Instead of owning multiple rifles, you can reconfigure your rifle to handle different roles with just a simple swap:

• 7.62 Conversion Kit – Adds punch and range for hunting or long-distance shooting.

• 9mm Conversion Kit – Perfect for affordable training, competition, or close-quarters work.

• .300 Blackout Conversion Kit – Ideal for suppressed shooting and low-velocity performance in short barrels.

Pairing the 9mm Conversion Kit with Heresy Design’s dedicated AUG 9mm magazine (MSRP $49.95) ensures reliable feeding and consistent cycling, making caliber swaps a true plug-and-play process.

Rail Systems for the Modern AUG

The AUG’s classic design is famously compact, but accessory mounting options can be limited without the right gear. Heresy Design’s rail upgrades solve that problem with precision-fit solutions that preserve the rifle’s balance:

• M2 Rail for Steyr AUG – A robust, tactical rail platform (MSRP $149.95, now $124.95) that allows secure mounting of optics, lasers, and accessories while maintaining zero.

• Vendetta™ Fixed Barrel Chassis Rail – Lightweight yet rock-solid, available from $39.95–$69.95 for shooters who want strength without unnecessary bulk.

• Vendetta™ Top Cover Rail – Adds upper mounting space for optics or night vision devices (MSRP $79.95, now $69.95).

• Vendetta™ Takedown Chassis Rail – Modular and customizable, priced between $114.95–$124.95 depending on options.

All Heresy Design rails are machined for exact fitment, ensuring no rattling, shifting, or zero loss during hard use.

Controls That Give You an Edge

Speed and ergonomics can make the difference between smooth operation and wasted seconds. Heresy Design offers AUG-specific control upgrades that improve handling for all users, whether left- or right-handed:

• SBF Safety Selector – Ambidextrous, smooth, and intuitive. Rated 5/5 by shooters for reliability and feel (MSRP $59.95, now $29.95).

• Extended Magazine Release – Designed for faster reloads and better accessibility, even with gloves. Rated 5/5 by users (MSRP $115.95, now $59.95).

Both parts are drop-in upgrades that can be installed without permanent modifications.

Suppressed Shooting Done Right

For shooters running silencers, proper timing and alignment are critical. Heresy Design’s Silencer Timing Devices make it easy to perfectly index your suppressor:

• 1/2″ Thread Model – Fits a wide range of common muzzle devices.

• 5/8″ Thread Model – Ideal for larger calibers and compatible suppressors.

At just $8.95 each, they’re an inexpensive but essential accessory to ensure safe and effective suppressed shooting.

Why AUG Owners Choose Heresy Design

Heresy Design’s advantage isn’t just in what they make—it’s in how they make it. Every part is:

• Machined from premium materials like aircraft-grade aluminum and high-strength steel.

• Built to exact specifications for seamless integration with Steyr AUG rifles.

• Tested for reliability under real-world shooting conditions.

These aren’t gimmick accessories—they’re functional, performance-driven parts trusted by AUG owners worldwide.

Final Thoughts

The Steyr AUG is a platform built for adaptability, and Heresy Design’s product line takes that adaptability even further. From multi-caliber conversion kits and custom rails to enhanced controls and suppressor accessories, every upgrade is designed to give your rifle a tactical and functional advantage.

If you want to maximize the potential of your AUG—whether for competition, home defense, or professional duty—Heresy Design delivers the parts and precision to make it happen.

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