CGS Group Helios QD 5.56 NATO Suppressor

Manufactured by CGS Group
Manufactured by CGS Group
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Items that are regulated by the ATF and NFA have restrictions and requirements: •Your Entire Order will ship only to a Federal Firearm License holder •NFA restricted items require class 3 licensing and documentation •A copy of your order/invoice as well as the current FFL License for your local dealer must be emailed to ffl@primaryarms.



The CGS Group Helios QD 5.56 NATO Suppressor is the perfect companion for your 5.56 NATO rifles and carbines. This quick-detach suppressor utilizes Variable Core Diameter (VCD) technology to deliver significant reductions in sound and flash, ensuring a more enjoyable shooting experience.

The Helios QD features a tapered interface between the muzzle device and suppressor, preventing carbon lock and ensuring easy removal. Its full DMLS 718 Iconel design provides exceptional strength and durability, while the generous .36 bore reduces back pressure and muzzle flash.


  • Convenient QD system for easy attachment and removal
  • VCD technology minimizes noise and flash signature
  • Minimal and repeatable point of impact shift
  • Tapered interface for carbon lock prevention
  • Full DMLS 718 Iconel construction for strength and durability
  • Generous .36 bore for improved performance and reduced back pressure
  • Versatile Platform that includes multiple threaded rear caps and adapter ring
  • Interchangeable caps for Customizing the suppressor to your needs
  • Full Auto Rated without barrel length limitations
  • Ratred up to and including 300 Norma Magnum.
  • Diameter: 1.75”
  • Length added to bare muzzle: 6.5”
  • Length added to muzzle device: 4.9”
  • Weight: 19 oz

This versatile suppressor includes a 1/2x28 direct thread mount, 5/8x24 direct thread mount, and a 1.375x24 threaded adapter ring, offering compatibility with a wide range of firearms. Additionally, both the rear and front caps are interchangeable, allowing for customization to fit your specific needs.

Full auto rated with no barrel length restrictions, the Helios QD can handle calibers up to 300 Norma Magnum, making it a truly versatile option.

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Baffle MaterialInconel
Baffle Style3D Printed
BrandCGS Group
Caliber Gauge5.56 NATO
Diameter1.75 in
Full Auto RatedFull Auto Rated
Length6.5 in
Suppressor MountDirect Thread
Thread Pattern1/2 X 28
User ServiceableNon-Serviceable
Weight19 oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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