First Look: SIG Sauer Hexium Suppressors

Lots of sound reduction, not a lot of gasses and propellant in your face.

by
posted on October 22, 2025
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SIG Sauer Hexium Suppressors

SIG Sauer just unveiled its new Hexium suppressor line, which consists of modern 3-D printed, (additive manufactured) low backpressure “flowthrough” style units. In addition to the low backpressure design, SIG Sauer Hexium units are HUB-compatible, making them adaptable to a wide variety of firearms.

Internally, SIG Sauer Hexium suppressors feature a unique pattern of mazes and chambers that vent and redirect gas throughout the suppressor body and exhaust them at the front. This reduces the backpressure, soot, fouling, unburned propellant and other harmful byproducts that are the result of modern smokeless propellant.

SIG Sauer uses materials such as nickel-based Inconel or titanium to complete Hexium suppressors. At launch, SIG Sauer is offering four dedicated models for 5.56 NATO firearms along with variants optimized for .300 BLK and .308 Win.

SIG Sauer Hexium Suppressor Features:

  • New baffle geometry
  • Low back pressure internal design
  • HUB compatible with ½x28-tpi direct-thread steel mount
  • Tool-less end cap accessory mounting system
  • External hex pattern with black high-temperature Cerakote finish
  • 3-D Printed titanium or Inconel suppressor body
  • SIG Sauer’s Infinite Guarantee

SIG Sauer Hexium 556 INC Specifications:

  • Caliber: 5.56 mm
  • Material: Inconel
  • Diameter: 1.75 inches
  • Length: 5.9 in
  • Weight: 20 ounces
  • HUB Compatible with direct thread steel mount
  • Thread Pattern: ½x28 tpi

SIG Sauer Hexium 556 Ti Specifications:

  • Model: Hexium556
  • Caliber: 5.56 mm
  • Material: Titanium
  • Diameter: 1.75 inches
  • Length: 6.2 inches
  • Weight: 11 ounces
  • HUB Compatible with direct-thread steel mount
  • Thread Pattern: ½x28 tpi

SIG Sauer Hexium 300 Specifications:

  • Caliber: 300 BLK
  • Material: Titanium
  • Diameter: 1.75 inches
  • Length: 8.95 inches
  • HUB Compatible with direct-thread steel mount
  • Thread Pattern: ⅝x24 tpi

SIG Sauer Hexium 762 Specifications:

  • Caliber: 7.62mm
  • Material: Titanium
  • Diameter: 1.75 inches
  • Length: 6.2 inches
  • Weight: 11 ounces
  • HUB Compatible with direct-thread steel mount
  • Thread Pattern: ⅝x24 tpi

Visit sigsauer.com to learn more about these new suppressors or other products from SIG Sauer.

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