[SHOT 2018] OSS Helical QD Silencers

James Reeves
by James Reeves

In this episode of TFBTV, James speaks with OSS at SHOT Range Day about their 3-piece Gen 4 silencers and their new 1-piece Gen 5 Helical QD suppressors. They are lighter and several hundred dollars cheaper than the three-piece Gen 4.

From OSS’s Website re: Helical SIlencers:

Baffle suppressors block expanding gases from fired rounds. This increases barrel and chamber pressure as much as 350psi causing significant weapon malfunctions and toxic blowback into the shooter’s face.

OSS suppressors add less than 30psi to backpressure while redirecting and venting expanding and toxic gases forward out the muzzle and away from the shooters face.

As gas expands rapidly backward in operating systems using a baffle suppressor, bolt velocity (BV) increases as much as 22%. This negatively impacts weapon performance and shooting experience with increased felt recoil, muzzle rise, and multiple malfunctions.

OSS suppressors do not increase bolt velocity (on some platforms BV is actually reduced), and dramatically reduces felt recoil and malfunctions.

Baffle suppressors do provide flash reduction, but they often create a first round plume and sound pop. And with extreme firing conditions, baffle suppressors have been shown to lose flash suppression effectiveness as heat and carbon buildup increase.

OSS suppressors effectively mitigate flash and sound signatures in all conditions and rates of fire.

Because baffle suppressors block expanding gases, the energy from rounds fired gets trapped causing high and prolonged heat and degraded suppressor life. Thermal gains spike quickly with semi-auto fire, and even faster with full-auto fire.

By allowing gas to expand and energy to transfer forward at a natural rate, OSS suppressors deliver effective thermal management with some models experiencing 70% lower temperatures than comparable baffle cans.

While it’s proven that OSS’s Flow-Through technology delivers superior backpressure, bolt velocity and heat reduction, some have questioned OSS’s ability to deliver hearing safe sound suppression comparable to the best baffle suppressors. With the same rifle type, ammo and weather conditions, we recently tested an OSS 5.56 suppressor against three of the leading 5.56 baffle cans. The results should silence any doubts.

A very special thanks to BROWNELL’S – check out their new Retro line here:


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James Reeves
James Reeves

Owner, Neutral Ground Gun Co. NRA/Louisiana State Police certified concealed weapons instructor, 2012-present Maxim Magazine's MAXIMum Warrior, 2011 TFBTV Executive Producer Champion, Key West Cinco De Mayo Taco Eating Competition Lawyer Instagram: gunshorts Twitter: @jjreeves

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Join the conversation
  • John Chrysostom John Chrysostom on Jan 24, 2018

    I am still amused at the mutual; bad-mouthing between OSS and competitors.

    • BaconLovingInfidel BaconLovingInfidel on Jan 25, 2018

      @John Chrysostom I have to admit that I hacked away with my cynic's axe early on.

      I've come around. I'm getting one of these to see for myself.

  • Vincent Vincent on Jan 24, 2018

    I'm still kind of waiting for someone to stick one of these on an m1a that doesn't have an adjustable gas plug, dedicated piston or that spindle mod to see if the blowback is still as gnarly as people have said when it comes to suppressed garand style actions.

    Also makes me wonder what kinds of ways people can measure the amount of gas and other guff that is spat out between different types of suppressors without being directly subjected to it.
    Rig it to a vice and tie a string onto the trigger in a very cold indoor range then take a look at how big the puff is on camera?

    • See 6 previous
    • Vincent Vincent on Jan 26, 2018

      @Wzrd Super late, but dang.
      That's way cool