MPN: UD11010


  • Extreme recoil reduction
  • Top ports reduces muzzle rise for faster follow-up shots
  • Progressive 90-degree ports
  • Smooth, balanced release of blast energy
  • Timing nut included for easy installation and indexing
  • Indexing slots compatible with the Dynamount Front Sight allow for a standard upright alignment or a 45 degree offset
  • 100% CNC-machined quality
  • 100% Made in the USA


  • Caliber: 5.56 NATO / .223 Rem.
  • Material: 416 Stainless Steel
  • Finish: QPQ Nitride
  • Weight: 5.8 oz.
  • Length: 2.41"
  • Outer Diameter:
    • Muzzle End: 0.89"
    • Body: 1.25"
  • Bore Diameter: 0.272"
  • Thread: 1/2"-28 TPI


  • .223/5.56 barrel with 1/2"-28 thread pitch and a minimum thread length of 0.600 inches.
  • Compatible with Dynamount front sight

*It is recommended to use this muzzle device on barrels 12" or longer due to the muzzle blast from aggressive recoil reduction.


  • 1x Ultradyne Pegasus Muzzle Brake (.223/5.56)
  • 1x Cover Sleeve
  • 1x Shrouded Timing Nut


The Ultradyne Pegasus Muzzle Brake was strategically designed to stand up to long-term use and increase follow-up shot accuracy to give you the support you need to master using your weapon.

Ultradyne's Muzzle Brake Is Made To Be Durable and Simple To Install

The Ultradyne Pegasus Muzzle Brake is made from CNC machined 416 Stainless Steel, well known for its durability, finished with a nitride salt bath for maximum longevity.

The timing nut for installation is included, making the installation of this muzzle brake drop in.

Ultradyne's Intentional Design Offers Tactical Benefits

Ultradyne's Pegasus Muzzle Brake has been intentionally designed to offset muzzle rise and offer remarkable recoil minimization by balancing the gas release in the tanker-style muzzle brake.

Ultradyne's design team created compensation ports that redirect gas from your sightline. The 90-degree side ports disperse gas in gaps to even out recoil in a way that improves the efficiency of subsequent shots fired.

This Ultradyne Muzzle Brake helps you avoid the sight deflection that transpires with handguard mounting; it is compatible with Dynamount barrel mounting.

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