Ultradyne Apollo S 5.56 Compensator 1/2x28 - Precision Muzzle Brake

The Ultradyne Apollo S 5.56 compensator is a precision muzzle brake engineered for shooters who demand serious recoil reduction without the aggressive blast signature. Built on 1/2x28 barrel threads and rated for 5.56 NATO, .223 Rem, and a full suite of compatible .22-caliber cartridges, this 5-port design delivers the kind of control that pays dividends on the range or in competition. Ultradyne's engineering team refined this compensator through extensive recoil analysis to find the sweet spot: maximum recoil control with minimal muzzle rise, all while keeping perceived blast more manageable than traditional brakes.

Made in the USA from 416 stainless steel and finished with a salt bath nitride coating, the Apollo S is built to last in any weather. The 5-port configuration spreads gas venting evenly across the recoil event, creating what shooters describe as an exceptionally smooth recovery between shots—critical whether you're dialing precision hits at distance or running fast follow-ups. At just 2.94 inches long and under 5.2 ounces total, it keeps your rifle balanced and handy without adding unnecessary bulk to the muzzle.

Installation is straightforward thanks to the included timing nut and 13/16-inch wrench flats. The brake is DynamoMount ready, meaning you can pair it with a barrel-mounted optic system to eliminate sight deflection issues that plague handguard-mounted setups. With a 14-inch minimum barrel length requirement, the Apollo S fits everything from short AR pistols to full-length rifles—just verify your barrel thread pitch before ordering.

Key Features

• 5-port design for even recoil distribution and minimal muzzle rise
• Competition-level recoil reduction with less perceived blast than traditional brakes
• 100% CNC-machined 416 stainless steel with salt bath nitride finish
• Shrouded timing nut included for simple installation
• DynamoMount compatible for barrel-mounted sight options
• Compact footprint: 2.94 inches long, 5.2 ounces total weight
• Made in the USA

Specifications

Frequently Asked Questions

Will the Apollo S fit my 5.56 AR-15?

Yes, as long as your barrel has 1/2x28 threads and meets the 14-inch minimum barrel length. The Apollo S is compatible with .223 Rem and 5.56 NATO, the standard cartridges for AR-15 rifles.

What's included in the box?

The Apollo S comes with a shrouded timing nut for installation. You'll use the included 13/16-inch wrench flats to secure it to your barrel.

Can I use the Apollo S with a barrel-mounted optic system?

Yes. The Apollo S is DynamoMount ready, which means it's compatible with barrel-mounted sight options that eliminate deflection issues from handguard mounting.

Is the Apollo S covered in rust protection?

The Apollo S is finished with a salt bath nitride coating on 416 stainless steel, which provides durability and corrosion resistance for extended field use.