Flash Hider Acheron FH HL

Barrel Thread

5/8×24 , M14x1 LH , M15x1

Caliber Group

max 5.56 mm (.223)



This product is currently out of stock and unavailable.



Effective flash hider with integrated HexaLug interface. Asymmetric weight reduction cuts eliminate the tuning fork effect and thus the whistling sound typical for open prong flash hiders.

Compatible with all 7.62 mm suppressors featuring our HexaLug quick attach mounting system. Due to the one-way compatibility of HexaLug it is impossible to install a suppressor of a smaller caliber. This eliminates the risk of a 5.56 mm suppressor being installed on a 7.62 mm flash hider.

The use of a flash hider is imperative on all rifles that are also going to be used unsuppressed but can’t show any muzzle flash.

On rifles that are primarily or exclusively used with a suppressor, a muzzle brake may be better suited. The ports of the muzzle brake redirect high-pressure gas towards the side and therefore prolong the life of the suppressor.

Thread Size Guide:

  • 5/8″ – 24 UNEF
    Standard thread size on almost all American made rifles chambered in a 7.62 mm caliber.
  • M14 x 1
    Fits all variants of the Czech made vz.58, occasionally found on hunting rifles. Does not fit AK47/AKM.
  • M14 x 1L
    Fits all AK47/AKM variants except for newer ones with the M24 x 1.5 thread (AK-103, AK-104, etc.).
  • M15 x 1
    Fits Haenel CR300 and CR308 as well as many other rifles. Does not fit HK MR308 and HK roller-delayed guns (G3, etc.)
  • M15 x 1 HK
    Specifically designed to cover the cylindrical section between the muzzle thread and the shoulder on an HK MR308. Do not use this with rifles made by Haenel.

Other thread sizes may be introduced later on.

If you need help chosing the right thread size, please ask your local Acheron dealer for help.


Length 54 mm
Diameter 25.5 mm
Weight 74 g
Caliber 5.56 mm
Material 1.7225
Surface finish QPQ Tenifer


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