Ultradyne USA121685992
Ultradyne Apollo S Compensator 6.5mm 5/8x24 Thread - Precision Muzzle Brake$128.80
Availability: In Stock
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.
| Caliber | 5.56 NATO, .223 Rem, .224 Valkyrie, .224 Weatherby Mag, .22-250 Rem, .222 Rem Mag, .222 Rem, .22 Nosler, .220 Swift, .22 PPC, .22 BR, .22 Hornet, .204 Ruger, .218 Bee |
| Barrel Thread | 1/2-28 UNEF-2B |
| Material | 416 Stainless Steel |
| Finish | Salt Bath Nitride |
| Length | 2.94 inches (75mm) |
| Outer Diameter | 0.975 inches (24.8mm) |
| Weight (Brake Only) | 4.4 ounces (124 grams) |
| Total Weight (with Timing Nut) | 5.2 ounces (147 grams) |
| Wrench Flats | 13/16 inch |
| Mounting | Shrouded Timing Nut |
| Minimum Barrel Length | 14 inches |
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.
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.
Yes. The Apollo S is DynamoMount ready, which means it's compatible with barrel-mounted sight options that eliminate deflection issues from handguard mounting.
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.
SKU: 121688240 • Width: 2in • Height: 2in • Depth: 4.25in • Weight: 0.44oz
Availability: In Stock
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.
| Caliber | 5.56 NATO, .223 Rem, .224 Valkyrie, .224 Weatherby Mag, .22-250 Rem, .222 Rem Mag, .222 Rem, .22 Nosler, .220 Swift, .22 PPC, .22 BR, .22 Hornet, .204 Ruger, .218 Bee |
| Barrel Thread | 1/2-28 UNEF-2B |
| Material | 416 Stainless Steel |
| Finish | Salt Bath Nitride |
| Length | 2.94 inches (75mm) |
| Outer Diameter | 0.975 inches (24.8mm) |
| Weight (Brake Only) | 4.4 ounces (124 grams) |
| Total Weight (with Timing Nut) | 5.2 ounces (147 grams) |
| Wrench Flats | 13/16 inch |
| Mounting | Shrouded Timing Nut |
| Minimum Barrel Length | 14 inches |
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.
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.
Yes. The Apollo S is DynamoMount ready, which means it's compatible with barrel-mounted sight options that eliminate deflection issues from handguard mounting.
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.
SKU: 121688240 • Width: 2in • Height: 2in • Depth: 4.25in • Weight: 0.44oz