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Dual-Circuit Gas Venting System in Combat NEMESIS Suppressors

Combat NEMESIS models (CORE, MICRO, LEGION) feature a dual-circuit gas venting system. What it is, why the bolt group lasts longer, and why the chamber stays clean during sustained fire.

Dual-Circuit Gas Venting System in Combat NEMESIS Suppressors
Contents
  1. What gas venting is
  2. Two circuits - what they are and why they matter
  3. How this differs from a conventional suppressor
  4. Why it matters
  5. Conclusion

Combat NEMESIS models - CORE, MICRO, LEGION - are not a "tube with baffles". At the core is a dual-circuit gas venting system. It reduces backpressure, eliminates overgassing to the shooter's face, and keeps the bolt group running reliably through extended use.

Note: this is not ZERO. ZERO is an architecture built on 5 stages / 8 channels, found exclusively in the ARCANE with titanium and aerospace-grade 7075-T6 aluminum. Combat lines use ordnance steel, phosphate coating, and dual-circuit gas venting - a different engineering approach built for combat cycles.

What gas venting is

On firing, a high-temperature gas flow follows the bullet. Without controlled management, that flow finds its way back through the gas port into the receiver. The result: a sharp metallic report, muzzle flash, overgassing in the shooter's face, and accelerated wear on the action.

Two-stage braking and flow redirection delivers:

  • a suppressed, flat report with no metallic ring;
  • complete flash elimination;
  • stable bolt group cycling;
  • a cleaner chamber after sustained fire.

Two circuits - what they are and why they matter

The logic is straightforward: one channel is not enough. Gas is split between two independent paths.

Dual-circuit gas venting diagram
  • Inner circuit. The primary channel - through the baffle stack, where the flow is progressively decelerated and loses velocity.
  • Outer circuit. Bleeds off a portion of gas before it reaches the main volume and routes it through dedicated exit ports. Acts as a compensator: reduces peak backpressure and removes the sharp pressure spike.

The result - less backpressure into the receiver, reduced muzzle rise, predictable cycling.

How this differs from a conventional suppressor

Conventional suppressorCombat NEMESIS
Single flow channelTwo circuits (inner + outer)
Partial flash suppressionComplete flash elimination
Overheats after 2-3 magazinesHolds 6+ magazines continuously
Noticeable muzzle rise, cycling spikesPredictable cycle, soft recoil

Why it matters

  • For the operator - less chance of compromising position through muzzle flash or erratic cycling.
  • For the civilian shooter - reduced wear on expensive firearms, predictable action behavior.
  • During sustained fire - point of aim is maintained and fast follow-up shots are possible.

Conclusion

Gas venting is not a "catalog feature". It determines how a firearm behaves from the very first shot. In combat NEMESIS suppressors it is built as a dual-circuit architecture - tested on the range and through combat cycles. Not a moderator. An engineering solution for real-world shooting.

See also
Suppressor for AR-15 (DB15): choosing without the dB myths

Suppressor for AR-15 (DB15): choosing without the dB myths

NEMESIS in STALKER and in reality: what the game won't show you

NEMESIS in STALKER and in reality: what the game won't show you

Size vs geometry: why a bigger suppressor does not mean quieter

Size vs geometry: why a bigger suppressor does not mean quieter

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