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Questions & Answers
Is this Ultradyne Mercury 7.62x51 brake really threaded 1/2x28 like it’s stated in details, not 5/8x24? I wonder if there is a typo… Manufacturer Answer

Thank you for bringing this to our attention! We will work to get the details updated ASAP. The 7.62 x 51 and 6.5 Mercury are threaded 5/8 X 24 as you suspected.

by Ultradyne USA, Manufacturer, March 18, 2026

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Product Info for Ultradyne Mercury Compensator

MERCURY has been meticulously engineered for the .223 | 5.56 caliber to provide superior recoil reduction and neutralize muzzle rise with a smooth, balanced release of blast energy. Progressive 90 side ports vent combusting gases at intervals that spread out the recoil impulse for efficient, accurate follow-up shots. MERCURY is the choice for those seeking a compact, lightweight muzzle device with smooth recoil characteristics and Dynamount on-barrel sight compatibility. A timing nut is included for easy installation.image

Specifications for Ultradyne Mercury Compensator:

Manufacturer: Ultradyne
Threads per Inch: 1/2x28
Color: Black
Country of Origin: USA

Features of Ultradyne Mercury Compensator

  • Ultra smooth recoil reduction and minimal shooter distraction.
  • 416 Stainless Steel with ultra-rugged salt bath nitride finish.
  • Barrel-mounted sight option eliminates sight deflection associated with handguard mounting.

Package Contents:

  • Ultradyne Mercury Compensator

Ultradyne Mercury Compensator Orderable Models

List of Orderable Models

  • Ultradyne Mercury Compensator, .625x24 7.62, UD10817 , MPN: UD10817 , UPC: 850011462577 , Code: 3HE-RMC-IPI3-UD10817
  • Ultradyne Mercury Compensator, .625x24 6.5, UD10717 , MPN: UD10717 , UPC: 850011462584 , Code: 3HE-RMC-IPI3-UD10717
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