Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount KIT
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Goes to a Class 3 dealer
Needs an ATF Form 4, a $200 tax stamp and an approval wait. The dealer's fee is on top.
Dead Air Armament
Overview
The Dead Air Sierra 5 Rifle Suppressor is designed for versatility across multiple calibers, making it a flexible option for a variety of builds. Its KeyMo mount type allows for quick attachment and detachment, enhancing user convenience during shooting sessions or when switching between different firearms. This suppressor is often utilized in builds focused on precision shooting or tactical applications where noise reduction and adaptability are key considerations.
Specifications
Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount KIT
August 2026 on GunPartPicker
Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount KIT ranked #12 of the 179 suppressors builders added on GunPartPicker in August 2026, behind the HUXWRX Flow 556K 5.56 NATO Flow-Through Suppressor (FDE) - 2159, with about 2% of all suppressors added to builds. Down from #9 in July. Builds with this suppressor are nearly all AR-15.
It was in stock most days in August 2026, and today 6 of the 8 retailers we track have it in stock. It dipped to $669.99 at GritR Sports for a stretch in August 2026, well under its usual $789, so sales do come around. Buying today, the lowest price is $778.99 at KY Gun Company, above August's low of $669.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 50 builds that include this one
LMT MARS-LS PDW Complete Ambidextrous AR-15 Lower Receiver
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN
Daniel Defense 14.5" 5.56 M4A1 AR-15 Complete Upper - Flat Dark Earth
Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A
Builds Featuring This Part
See all 1 →Builds in the community that include the Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount Kit
| Build | Parts | Total |
|---|---|---|
 | 19 | $4992.78 |
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