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Ultradyne Apollo S Compensator Up to $5.21 Off w/ Free S&H — 2 models

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01:34
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250
1 of 2 videos
Ultradyne Muzzle Brake Video
2 of 2 videos
Ultradyne Muzzle Device Installation Video
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
1 of 7 images
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250
2 of 7 images
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
3 of 7 images
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
4 of 7 images
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
5 of 7 images
Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
6 of 7 images
Ultradyne Apollo S Compensator Muzzle Brake, AR-15, .223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250
7 of 7 images
Ultradyne Apollo S Compensator, 6.5mm, 5/8x24,Black Nitride, UD10250

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Questions & Answers
I would like to know if this muzzle break would work well with a Radical Arms 7.62 x 39 upper replacing the A2 standard break. What say Customers?

Any break would work better then an A2 flash hider.

by Bob, Verified Owner, February 29, 2020
See 1 More Answer
The shrouded timing nut is supposed to cover the gap caused by timing the brake to the barrel. How large a barrel will the shroud cover? Manufacturer Answer

The standard timing nut provided with the Apollo S will successfully shroud over diameters 7/8" (0.875") or less.

by Ultradyne USA, Manufacturer, October 8, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Yes, it does work. by Cal, Verified Owner, April 9, 2023
Installed one of these on a 6.5 Grendel. No, it's not too much compensator for Grendel, the volume of gas generated by the cartridge is what makes it work. Easy install, just follow the directions. Reduces felt recoil,IMO, to that of a 5.56. It'...
Read More...
1/1 found this helpful
Helpful Positive Review
what recoil ? by AR Fun, Verified Owner, October 19, 2022
Just returned from the range and yes this break does a great job. Not any louder than a typical break but this thing make recoil non existent. Righted up my groups which always what your looking for. Have had many break on my 18” ar and this is th...
Read More...
4/4 found this helpful
Helpful Positive Review
Simple the Best Compensator by Kaizen, Verified Owner, September 5, 2020
Ultradyne Apollo S Compensator is a great addition to my 6.5 CM. My rifle is so smooth since I put this Ultradyne Apollo S on the threaded barrel. My rifle looks real sharp in addition to being so functional with this compensator. I highly recommend ...
Read More...
3/3 found this helpful
Helpful Positive Review
great product by Jayr738, Verified Owner, March 23, 2021
The Apollo s comes as advertised. Nothing but great results as soon as I installed it on my ar15 5.56 16in barrel. Took me under 5 minutes to install and line up with the right set of tools. Recoil was greatly reduced allowing me to stay on target af...
Read More...
2/2 found this helpful
Helpful Positive Review
best bang for your buck by Han, Verified Owner, April 12, 2021
I’m a first time AR builder, I’ve shot my friends AR and I couldn’t be happier I bought this, everyone at my local range loves the look of the compensator and are very impressed at the recoil control it provides I’m definitely very happy with this pu...
Read More...
2/2 found this helpful
Helpful Positive Review
All good things by Flexaroo, Verified Owner, November 7, 2021
Looks really sweet, the installation hardware ensures it will be perfectly lined up side to side, and tames recoil like nobody’s business! I put this on my wife’s rifle and she loves it. Added bonus is the side blast rocking everyone and everything n...
Read More...
2/2 found this helpful
Read All 20 Reviews
2 Models Available
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Ultradyne Apollo S Compensator

The APOLLO S from Ultradyne provides competition level recoil reduction and muzzle control. By using a scientific approach and studying thousands of recoil events, Ultradyne engineers have struck a balance between extreme recoil reduction and less aggressive venting of gas without sacrificing the elimination of muzzle rise. The Apollo S is perfect for shooters who want drastic recoil reduction with less perceived blast. Like all Ultradyne muzzle devices, a timing nut is included for easy installation.image

Specifications for Ultradyne Apollo S Compensator:

Manufacturer: Ultradyne
Color: Black
Fabric/Material: 416 Stainless Steel
Gun Make: AR Platform
Gun Model: AR-15
Outer Diameter: 0.975 in
Condition: New
Condition Quality: Excellent
Condition Details: Other
Country of Origin: USA

Features of APOLLO S:

  • Extreme Recoil Reduction
  • Virtually Eliminates Muzzle Rise
  • Manages Sonic Blast
  • Pairs easily with the Dynamount Sighting System
  • 416 Stainless Steel with Ultra Rugged SB Nitride Coating
  • .975 Outside Diameter
  • Competition Legal
  • Shrouded Timing Nut Included

Package Contents:

  • Ultradyne Apollo S Compensator,6.5mm,5/8x24

What firearm models does the manufacturer say Ultradyne Apollo S Compensator is compatible with?

The manufacturer says that Ultradyne Apollo S Compensator is compatible with AR-15

Ultradyne Apollo S Compensator Orderable Models

List of Orderable Models

  • Ultradyne Apollo S Compensator, AR-15, 223/5.56, 1/2-28in, .975 Outside Diameter, 416 SS, Salt Bath Nitride, Black, UD10220 , MPN: UD10220 , UPC: 851019008613 , Code: 3HE-BCM-APL65-UD10220
  • Ultradyne Apollo S Compensator, 6.5mm, 5/8x24, Black Nitride, UD10250 , MPN: UD10250 , UPC: 851019008644 , Code: 3HE-BCM-APL65-UD10250

Ultradyne Apollo S Compensator Unavailable & Discontinued Models

List of Unorderable Models

  • USED Ultradyne Apollo S Compensator, 6.5mm, 5/8x24, Black Nitride, UD10250, EDEMO1, Condition Parts Only/Salvage, Defective , MPN: UD10250-EDEMO1 , Code: 3HE-BCM-APL65-UD10250-EDEMO-DF-F
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Last updated 2026-09-05 UTC.