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Questions & Answers
Can I use this compensator on my 9mm carbine with 1/2 x 28" threads?

No, 5.56/.223 is a 22 cal projectile so the bore of this comp is too tight for a 9mm round, it will thread on but when you fire it will destroy this device. You can bore it out if you're handy with a drill press or lathe...

by Sabre, Verified Owner, March 20, 2019
Will this work with a.17 hmr Manufacturer Answer

As long as your rifle is threaded in 1/2 x28, it should work great with the Athena 5.56.

by Ultradyne USA, Manufacturer, October 8, 2025
Customer Reviews
Helpful Positive Review
Athena Linear Compensator by James Conway, Verified Owner, March 2, 2024
Fantastic compensator! Took my AR to the range the other day. Not only did the guys on either side of me comment on the lack of side compression, but they also noted that it sounded like the shots were originating 30 yards down range.
4/4 found this helpful
Helpful Positive Review
Athena Linear Compensator by Tank, Verified Owner, January 4, 2026
Nicely made. A little small but if you prefer a small compensator this is the one.
1/1 found this helpful
Helpful Positive Review
Athena Linear Compensator by Tank, Verified Owner, January 12, 2026
This is a very slim Compensator. It fit well under my thin extended forerail.
1/1 found this helpful
Helpful Positive Review
Ultradyne linear Comp. by TonyG, December 23, 2018
I bought an One of these for my 10 inch pistol and I am very i have been very impressed with it. About 400 rounds through it so far. I bought it mostly to make my pistol friendlier for my fellow shooters and it does the trick! Shooting partners immed...
Read More...
15/15 found this helpful
Helpful Positive Review
I have installed a number of muzzle devices, including compensators, brakes if you know what they do, and 'breaks' if you can't spell. If you are looking for a good fitting compensator that directs the blast away from you and fits well then this is a...
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Ultradyne athena by CoolC, Verified Owner, November 14, 2024
Easy to install, and adds a nice touch to the gun. Havent shot with it yet, but hopefully soon. Shipping was quick with no issues. Will buy from again.
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Product Info for Ultradyne Athena Linear Compensator

ATHENA is a linear compensator that provides a reduced sound signature which sends a lower percent of sound back towards the shooter, optimizing sonic performance over recoil. Athena is the most cost-effective way to upgrade a rifle to the Dynamount Sighting System and gives cleaner appearance for sleek look compared to a traditional brake. Like all Ultradyne muzzle devices, a timing nut is included for easy installation.image

Specifications for Ultradyne Athena Linear Compensator:

Manufacturer: Ultradyne
Color: Black
Finish: Salt Bath Nitride
Fabric/Material: 416 Stainless Steel
Condition: New
Country of Origin: USA

Features of ATHENA:

  • Optimal Sonic Performance
  • Shrouded Timing Nut Included
  • 416 Stainless Steel with Ultra Rugged SB Nitride Coating
  • Dynamount Compatable
  • Pairs easily with the Dynamount Sighting System
  • Competition Legal

Package Contents:

  • Ultradyne Athena Linear Compensator

Ultradyne Athena Linear Compensator Orderable Models

List of Orderable Models

  • Ultradyne Athena Linear Compensator, 223/5.56, 1/2x28, Black, UD10660 , MPN: UD10660 , UPC: 851019008262 , Code: 3HE-BMB-ATH-UD10660
  • Ultradyne Athena Linear Compensator, .308/7.62, 5/8x24, Black, UD10690 , MPN: UD10690 , UPC: 851019008293 , Code: 3HE-BMB-ATH-UD10690

Ultradyne Athena Linear Compensator Unavailable & Discontinued Models

List of Unorderable Models

  • USED Ultradyne Athena Linear Compensator, 223/5.56, 1/2x28, Black, UD10660, EDEMO1, Used, Condition Fair , MPN: UD10660-EDEMO1 , Code: 3HE-BMB-ATH-UD10660-EDEMO1
  • USED, Ultradyne Athena Linear Compensator, 223/5.56, 1/2x28, Black, UD10660 , MPN: UD10660-EDEMO , Code: 3HE-BMB-ATH-UD10660-EDEMO-RE-C
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