Ultradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670
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Overview
The Ultradyne USA 5.56MM/223REM Mercury Brake is designed specifically for AR-15 rifles chambered in 5.56 NATO, featuring a 1/2x28 thread pitch that makes it compatible with a wide range of barrels. This stainless steel muzzle brake effectively reduces recoil and muzzle rise, enhancing your shooting stability and accuracy. It is commonly found in builds that utilize a rifle-length gas system, making it a practical choice for precision and performance-focused setups.
Specifications
Ultradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670
Available Merchants(4)
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Stock Alert
Price and stock
The Ultradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670 was out of stock everywhere we track for all of September 2026, and today none of the 4 retailers we track has it in stock right now. Listed prices start at $85.01 at BattleHawk Armory for when it comes back.
Prices checked · refreshed daily across 37 retailers
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Builds Featuring This Part
See all 1 →Builds in the community that include the Ultradyne USA 5.56MM/223REM MERCURY Brake Fits AR-15 Rifles w/ 1/2x28 Threads, Black Stainless Steel - UD10670
| Build | Parts | Total |
|---|---|---|
 | 22 | $1775.31 |
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