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Dead Air Sierra-5 5.56/.223 5.72" Silencer w/KeyMo Adapter & 1/2-28" KeyMo FH SIERRA5KM


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This item can only be shipped to a Licensed Federal Firearms Dealer. Please see our Shipping Policy to review firearms shipping requirements.
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New for 2022, the Sierra-5 delivers the perfect balance of overall sound and flash reduction while maintaining a compact profile with minimal weight. Designed for hard, professional use, the Sierra-5 suppressor is rated for full-auto, and utilizes an ultra-durable, fully welded construction. The outer tube is made from premium stainless steel, and features knurling to provide a strong purchase for securing/removing the suppressor or for use with heat-protective wraps. The interior of the Sierra-5 utilizes all Stellite baffles with full penetration laser welding to ensure a solid, robust monolithic core structure, which is then welded to the outer tube for additional strength and durability. In addition to greatly mitigating sound and flash signature, this configuration also provides a low blowback, short-pressure impulse. Other features of the Sierra-5 include a HUB socket, allowing the suppressor to be configured to the user’s specific needs, and a small hole drilled through the blast chamber makes it possible to pin and weld your adapter or insert to the suppressor. Furthermore, the Sierra-5 ships with either a Xeno mount or a KeyMo mount.

Features of the Sierra-5 Suppressor:

  • Durable, fully welded construction
  • All Stellite baffles
  • Knurled outer tube
  • Low blowback, short-pressure impulse
  • Ships with either a Xeno mount or a KeyMo mount


  • Caliber:5.56 NATO
    .223 Rem
    .224 Valkyrie
  • Weight:15.4 ounces
  • Dimensions:Diameter: 1.55 inches
  • Length:5.72 inches
  • Item ConditionNew
  • Product TypeSuppressor
  • UPC810128160001

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