Home > Gun Parts > Suppressors and Adapters > Dead Air Suppressors & Accessories >

Dead Air Armament Sierra-5 KeyMo 5.56 Silencer
Dead Air Armament Sierra-5 KeyMo 5.56 Suppressor

Alternative Views:

MSRP: $929.00
Sale Price: $789.00
JoeBob dun saved you $140.00!

Availability: Usually Ships in 24 Hours after ATF approval
Product Code:

Firearm Acknowledgement

I acknowledge this is a NFA item and must ship to a NFA dealer with a valid SOT

Description Learn More
This IS an NFA item. This WILL require shipping to an FFL with a valid SOT. ALL ATF laws apply. To see how to order a suppressor, follow this guide:

How To Guide: Ordering A Suppressor

Introducing the all-new 5.56 silencer from Dead Air Silencers. From the beginning, our mission has been to give No Quarter in design, performance, and technology. The Sierra-5 stands true to that mission by giving you everything you want out of a dedicated 5.56 silencer.

This is a hard-use silencer. We are not cutting costs or decreasing lifespan by using stainless steel baffles. We are not sacrificing durability in search of saving a few ounces. The Sierra-5 is full-auto rated with no barrel length restrictions. Love or hate the knurling, it’s function over form, directly inline with our goal when developing the Sierra-5. Frankly, if you don’t get the Sierra-5 red hot each time you shoot it we might be offended.

Built for professional use, it offers the perfect balance of overall sound and flash suppression while maintaining a compact footprint and minimal weight. By utilizing HUB compatible (1.375-24”) mounting adapters, it can be configured to the end user’s specific needs and is available out of the box with either our KeyMo or Xeno mounting system.

Featuring the proven winning combination of welded Stellite® baffles wrapped in a stainless outer tube, Sierra-5 is the last 5.56 suppressor you’ll need.

The Sierra-5 KeyMo includes a 1/2-28 KeyMo flash hider and a KeyMo adapter.

  • Flash hider front cap - The included flash hider front cap aids in excellent visual signature reduction.
  • Interchangeable front caps -The Sierra-5 is compatible with all of our R-Series front caps, including our E-Brake.
  • Fully-welded construction
  • Mounting modularity - The Sierra-5 KM ships with the complete KeyMo system (adapter and flash hider). But thanks to the 1.375-28″ HUB socket you can change your mind without regret.
  • Utilitarian design - The outer tube is knurled to provide a strong purchase for securing and removing the silencer. It also serves extremely well in securing heat-protective wraps.

  • CALIBER RATING: 5.56 NATO, 224 Valkyrie
  • ENERGY RATING: 2200+ ft lbs
  • BORE DIAMETER: 5.56mm
  • LENGTH (NO ADAPTER): 4.87 inches
  • LENGTH (W/KEYMO): 6.27 inches
  • DIAMETER: 1.5 inches
  • WEIGHT (NO ADAPTER): 10.8 ounces
  • WEIGHT (W/KEYMO): 15.4 ounces
  • MATERIALS: Stellite® baffles, 17-4 PH stainless steel
  • FINISH: Black Cerakote®
  • USAGE: Ideal for heavy firing schedules
  • MSRP: $929

Browse for more products in the same category as this item:

Gun Parts > Suppressors and Adapters > Dead Air Suppressors & Accessories
Gun Parts > Suppressors and Adapters
Firearms > Suppressors > Dead Air Armament Suppressors