Dead Air Sierra 5 KeyMo with KeyMo Adapter & 1/2-28 KeyMo Flash Hider
$839.00
2 in stock
Introducing the Sierra KeyMo 5.56 silencer from Dead Air Silencers. From the beginning their 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. They 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.
| Upc | 810128160001 |
|---|---|
| Manufacturer | Dead Air Silencers |
| Manufacturer part number | SIERRA5KM |
| Length | 4.8700 |
| Model | Sierra 5 |
| Product type | Suppressor |
| Shipping weight | 2.0 |
| Style | Quick Detach |
| Thread pattern | 1/2"-28 tpi |
BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.
The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.
We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.
Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.
Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.
Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.
We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.
We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.
Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.
Yes. Depending on the request, we can help source specific products or assist with custom configurations.
Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.
Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.
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