Unrivaled Armory A2 Suppressor Adapter Siege Brake .223/5.56 - SBSA-A2-5.56
$89.00
Only 9 left in stock
Enhance your AR-15 platform with the Unrivaled Armory A2 Suppressor Adapter Siege Brake, a versatile muzzle device engineered for .223/5.56 and compatible calibers. This compact brake delivers effective recoil reduction while maintaining the same form factor as a standard A2 flash hider, allowing seamless integration with suppressors and accessories designed for A2 mounts.
Key Features
- Suppressor Compatibility: Accepts suppressors and accessories that fit the A2 flash hider pattern for quick, reliable mounting without additional adapters.
- Recoil Management: Features an internal expansion chamber that reduces felt recoil and functions as a compensator to minimize muzzle rise for faster follow-up shots.
- Customizable Performance: Tunable design allows users to open tuning holes in the expansion chamber with a drill for personalized gas flow and optimal tune-ability (instructions included).
- Lightweight and Compact: At just 2.3 ounces and 1.9 inches in overall length, it adds minimal weight and length to your build.
- Durable Finish: Hardened construction with bead blasting and QPQ Black Nitride treatment for a matte black, corrosion-resistant surface.
Specifications
- Muzzle Device Type: Muzzle Brake with suppressor adapter capability
- Threads: 1/2×28
- Cartridge Compatibility: .223/5.56, .224, and 5.45mm
- Finish: QPQ Black Nitride (Melonite)
- Weight: 2.3 oz
- Length: 1.9 inches
- Includes: Crush washer for proper installation and timing
- Origin: 100% Made in the USA
Why Choose This Product
Shooters often face challenges with excessive recoil and limited suppressor options on standard A2-style setups. This Siege Brake addresses those pain points by combining proven recoil reduction technology in an ultra-compact package that preserves the familiar A2 profile. Its simplified, no-frills design suits a wide range of builds, from tactical to general-purpose rifles, while the nitride finish ensures long-term durability in demanding environments. The internal chamber design maximizes performance without complex adjustments, making it ideal for users seeking reliable results out of the box.
Upgrade your muzzle device today to experience improved control, enhanced versatility, and professional-grade construction on your next range session or build.
| Weight | 2.3 oz |
|---|---|
| Dimensions | 1.9 × 1 × 1 in |
| Muzzle Device Type | Muzzle Brake |
| Threads | 1/2×28 |
| Cartridge Compatibility | .22 (.223/5.56/.224, etc.) |
| Finish | Nitride / Melonite |
| MPN | SBSA-A2-5.56 |
| UPC | 36785 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Please select an FFL from the table below, if you do not see your desired FFL, click "Set Later" and you will be able to enter your FFL's information after checkout.
| Name | City | State | ZIP | Phone | |
|---|---|---|---|---|---|
|
Loading FFL contacts, please wait...
|










