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Unrivaled Armory A2 Suppressor Adapter Siege Brake .223/5.56

Unrivaled Armory A2 Suppressor Adapter Siege Brake .223/5.56

Unrivaled · Muzzle Devices

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Best price

$84.55at OpticsPlanet

In stock Sale checked Oct 31, 2026

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Where to buy

StorePriceAvailabilityBuyAdd to build
OpticsPlanet Best price $84.55Salechecked Oct 31, 2026 In stock Buy at OpticsPlanet
AR15Discounts $89.00checked Oct 31, 2026 Check store Buy at AR15Discounts
Dirty Bird $89.00checked Oct 31, 2026 Check store Buy at Dirty Bird

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Lowest in-stock price in the last 30 days: $84.55 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 28, 2026.

Show the prices as a table
StoreLatestLowestHighest
AR15Discounts$89.00$89.00$89.00
Dirty Bird$89.00$89.00$89.00
OpticsPlanet$84.55$84.55$84.55

Since Oct 28, 2026.

About this part

The Unrivaled Armory A2 Suppressor Adapter Siege Brake .223/5.56 is a muzzle brake from Unrivaled. It's sold by 3 stores (1 in stock), from $84.55 to $89.00. The lowest in-stock price in the last 30 days was $84.55 at OpticsPlanet.

Fits and works with

Caliber
5.56 / .223 · Shop matching ammo

Specifications

Manufacturer
Unrivaled
Type
Muzzle Brake
Caliber
5.56 mm NATO

From the manufacturer

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: 1/2x28 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.

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$84.55 at OpticsPlanet
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