Description
Heresy Design™ 16.1″ 9MM AUG® Conversion Kit
Engineered to perfection and built for performance, the Heresy Design™ 16.1″ 9MM AUG® Conversion Kit is designed to be compatible with the Steyr® AUG® A3 M1 using either the Standard or NATO stock. This quick change barrel system allows AUG® owners to easily switch calibers and shoot suppressed with minimal gas blowback. The 9MM 16.1″ Conversion Kit ships with a barrel assembly, carrier, and magazine. Available right at Heresy Design.
Features:
- 3 Lug Suppressor Mount with 1/2×28 Thread Option
- Compatible with AUG® A3 M1 (Standard and NATO stock models available)
- Easy Install without Modification
- Direct Blowback Operating System
- Anodized Aluminum Quad Rails
- Standard AR15 Wear parts
- Isonite coated wear parts
- Limited Lifetime Warranty
⚠️ Safety Notice – Fire Control Compatibility (AUG 9MM Conversion)
The Heresy Design AUG 9MM Conversion is tested and approved for use only with factory Steyr AUG fire control groups and factory Steyr accessories, including the lighter factory red spring.
This conversion operates on a direct blowback system, which generates a higher impulse than the standard AUG operating system. The use of aftermarket fire control components, trigger modifications, or non-factory enhancements can result in an unsafe condition.
- Use of any non-factory fire control components voids all warranty coverage and removes all liability from Heresy Design.
- For safe and reliable operation, only factory Steyr AUG fire control components should be used with the AUG 9MM Conversion.
Product Specifications:
| Standard | 30 rd. | Standard | 10 rd. | NATO | 30 rd. | NATO | 10 rd. | |
| Compatibility | Standard Stock | Standard Stock | NATO Stock | NATO Stock |
| SKU | HBA16D-A | HBA16D-10-A | HBA16D-N | HBA16D-10-N |
| UPC | 850055721074 | 850055721074 | 850055721067 | 850055721067 |
| Caliber | 9x19mm | 9x19mm | 9x19mm | 9x19mm |
| Barrel Length | 16.1" | 16.1" | 16.1" | 16.1" |
| Barrel Material | 41-V50 | 41-V50 | 41-V50 | 41-V50 |
| Barrel Finish | Isonite | Isonite | Isonite | Isonite |
| Barrel Thread Pitch | 1/2x28 with 3-lug suppressor mount | 1/2x28 with 3-lug suppressor mount | 1/2x28 with 3-lug suppressor mount | 1/2x28 with 3-lug suppressor mount |
| Barrel Twist Rate | 1:10 | 1:10 | 1:10 | 1:10 |
| Muzzle Device | A2 Flash Hider | A2 Flash Hider | A2 Flash Hider | A2 Flash Hider |
| Magazine Capacity | 30 | 10 | 30 | 10 |







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