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OSS STS Compensator


The OSS STS Compensator can be mounted onto any barrel with the appropriate thread pattern.  The muzzle device allows for any 5.56/7.62 IFM suppressor (both the Helix & the Elite) to be quickly mounted utilizing the self-tightening system (STS). Just thread the IFM Suppressor onto the STS Compensator, hand tighten and you’re ready to shoot. The STS Flash Hider is 2.9″ long, finished in a black cerakote and can be pinned and welded to a 14.5″ barrel to avoid creating an SBR.

The OSS STS Compensator is available in the following thread patterns:

  • 1/2 x 28
  • 5/8 x 24
  • 15 x 1mm

Additional Information Content

Additional information

Thread Pattern

1/2×28 (5.56mm/223), 5/8×24 (7.62mm/308), M15x1

Modern Warriors

We started Modern Warriors and Alice Firearms for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

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