[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer

Austin R
by Austin R
[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer

Dead Air unveiled their new Sierra-5 5.56 silencer at NRAAM 2022. The new Sierra-5 comes from the factory with either a Xeno or Key-Mo mount. I had a chance to get a first look at the Dead Air Sierra-5 and go over the details with the company’s owner Mike Pappas.

Dead Air Silencers @ TFB:

[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer

[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer
Dead Air’s long-awaited 5.56 can is finally here under the name Sierra-5. Both models of the Sierra-5 have flash hider front caps and integrated Key-Mo or Xeno mounts. Each of the mounts will come with a corresponding muzzle device so you have everything you need to mount and shoot right out of the box.
[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer
In addition, both the mounts can be removed from the end of the silencer. Removal of the mounts allows access to the 1.375-28″ HUB socket if you prefer a direct thread option.
[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer
The Sierra-5 has an outside diameter of 1.55″ and an overall length of 5.72 inches (with Xeno) or 6.27 inches (with Key-Mo). The profile has been optimized for the best possible sound reduction on a 5.56 rifle.
[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer
To put this all in perspective, the new Dead Air Sierra-5 with Xeno mount has the same overall length as the Sandman-K. This new compact offering aims to round out the Dead Air lineup in a compact new package. The Sierra-5 is available now with an MSRP of $859 with Xeno mount, and $929 with Key-Mo mount.
[NRAAM 2022] Dead Air Sierra-5 5.56 Silencer

Product Specs

  • CALIBER RATING: 5.56 NATO, 224 Valkyrie
  • ENERGY RATING: 2200+ ft-lbs
  • BORE DIAMETER: 5.56mm
  • LENGTH (NO ADAPTER): 4.87 inches
  • LENGTH: (W/XENO) 5.72 inches, (W/KEYMO) 6.27 inches
  • DIAMETER: 1.5 inches
  • WEIGHT: (NO ADAPTER) 10.8 ounces
  • WEIGHT: (W/XENO) 13.3 ounces, (W/KEYMO) 15.4 ounces
  • MATERIALSStellite® baffles, 17-4 PH stainless steel
  • FINISH: Black Cerakote®
  • USAGE: Ideal for heavy firing schedules
  • MSRP: $859 (XENO), $929 (KEYMO)
  • BARREL RESTRICTIONS: None
  • FULL AUTO RATED: Yes
  • PART NUMBER: SIERRA5XM, SIERRA5KM
Austin R
Austin R

The author is a military contractor who enjoys conducting independent firearms research and reloading. Article inquiries and suggestions are welcome at austinjrex at gmail.com

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 8 comments
  • Ghostdog Ghostdog on May 31, 2022

    But the real question is, can you also use this as a butt plug?
    Asking for my "friend" Beto O'Rourke

  • Aono Aono on May 31, 2022

    Definitely one to watch. Ideally Pew Science will have released Omega556 backpressure metric by the time he releases the sound data on this. I have hopes that this will be a very efficient design, if only because of Dead Air's track record making efficient designs.

    • See 2 previous
    • Andrew Andrew on May 31, 2022

      @Aono Oh, ok. Thanks.

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