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Questions & Answers
Will this work for an 7.62x39 in ar platform? Ultradyne doesn't advertises this is for .308/7.62. Is the inside diameter .308 or .311 for 7.62x39?

Don't know where they got the x39. I've listed the specs from Ultradyne website on the .308/7.62 comp. Hope it helps

Apollo S .308 / 7.62 Technical Specs
CALIBER
Rated for the standard cartridges in the following calibers: 308 Win, 7.62×51 NATO, 300 AAC Black Out, 300 Savage, 303 Savage, 30-30 Win
MINIMUM BARREL LENGTH 14″
BARREL THREAD 5/8-24 UNEF-2B
BARREL THREAD LENGTH MINIMUM .600″
MATERIAL
416 Stainless Steel
Salt Bath Nitride Finish
MOUNTING Shrouded Timing Nut
MASS
Brake Only 125 grams | 4.4 ounces
Total 150 grams | 5.3 ounces
DIMENSIONS
Length 75mm | 2.94 inches
OD 24.8 mm | 0.975 inches
WRENCH FLATS 7/8 inch

by Tonyt, Verified Owner, April 9, 2022
Will theUltradyne Apollo S Compensator 7.62x51 mm work with A 6.5 PRC with a24” barrel bolt action rifle? Manufacturer Answer

Hello Todd. The Apollo S 7.62/.308 is not compatible with 6.5 PRC due to the higher pressures of the 6.5 PRC. You will need the Apollo LR 6.5: https://www.opticsplanet.com/ultradyne-ud11180-6-5-apollo-lr-compensator-5-8x24.html?_iv_caliber-193146313=6-dot-5mm-creedmoor

by Ultradyne USA, Manufacturer, January 19, 2026
Customer Reviews
Helpful Positive Review
LONG TIME USER by JIMMY, Verified Owner, February 14, 2024
THE BEST MUZZLE BRAKE EVER. I'VE BOUGHT ALOT OFF MUZZLE BRAKE IN MY TIME AND TRY ALOT OF THEM TOO, EVEN Kahntrol. NOTHING COME CLOSED TO THE ULTRADYNE. HIGHLY RECOMMEND THOSE POEPLE HAVE NEVER USE THIS PRODUCT BEFORE TO GIVE IT A TRY
3/3 found this helpful
Helpful Positive Review
Ultradyne muzzle device by CW, Verified Owner, October 26, 2024
This thing does exactly what they claim , almost eliminates recoil , it is amazingly loud , concussion will clean off a shooting table! Not range friendly,, but it works great !
1/1 found this helpful
Helpful Positive Review
Happy as can be by Catmancan, January 3, 2023
I bought what I thought was the Apollo Max from another company and got the Apollo S and did not even think about what the package said on it being the S.anyway installed it on my 308 AR with a 20inch barrel and shot it and WOW � I had too look and m...
Read More...
3/3 found this helpful
Helpful Positive Review
great muzzle break by ARs for everyone, August 7, 2023
I already own this model mounted on my 16" AR10,It works great. someone standing behind me complained it blew their hat off. I am planning to put this one on the 20" barrel I ordered for it and I own the 4 port little brother on my AR15 which works j...
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1/1 found this helpful
Read All 4 Reviews
Color:
Black
Caliber:
7.62x51mm NATO
Finish:
Nitride
Fabric/Material:
416 Stainless Steel
Outer Diameter:
0.975 in
Condition:
New

Code: 3HE-BMB-UD10270

MPN: UD10270

UPC: 851019008668

List: $139.00Save $4.01
$134.99

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 7.62x51mm

Your rifle will greatly improve its performance when outfitted with this Ultradyne Apollo S Compensator 7.62x39mm. Ultradyne built these Recoil Reducing Muzzle Devices from rugged stainless steel with a tough nitride coating for extreme durability in the field. And these Ultradyne 7.62x39mm Apollo S Recoil Reducers offer increased recoil reduction for a more comfortable shooting experience that nearly eliminates muzzle rise. This ultra-tactical recoil reducer can help you boost your precision in the field by minimizing recoil, muzzle rise, and your perceived blast. Boost your accuracy in the field while completely controlling your shots with the Ultradyne Apollo S 7.62x39mm Pistol Comp.image

Specifications for Ultradyne Apollo S Compensator 7.62x51mm:

Manufacturer: Ultradyne
Color: Black
Caliber: 7.62x51mm NATO
Finish: Nitride
Fabric/Material: 416 Stainless Steel
Outer Diameter: 0.975 in
Condition: New
Country of Origin: USA

Features of Ultradyne Apollo S Compensator 7.62x51mm

  • 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
  • made in specialized factories

Package Contents:

  • Ultradyne Apollo S Compensator 7.62x51mm
  • Shrouded Timing Nut Included

Ultradyne Apollo S Compensator 7.62x51mm Orderable Models

List of Orderable Models

  • Ultradyne Apollo S Compensator 7.62x51mm, Nitride, 416 Stainless Steel, Black, UD10270 , MPN: UD10270 , UPC: 851019008668 , Code: 3HE-BMB-UD10270
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