Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount KIT
All Dead Air Armament suppressors
Click to see full view
Plan your Class 3 dealer
Suppressors go through a Class 3 (SOT) dealer, and the federal tax on them has been $0 since January 1, 2026. You still pay the dealer's transfer fee. Some states only allow suppressors and SBRs that are federally registered or possessed in compliance with federal law. Check your state's statute before you buy.
Federal and state suppressor rulesDead 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
Available Merchants(6)
Prices checked
Price Alert
November 2026 so far on GunPartPicker
Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount KIT ranks #11 of the 253 suppressors builders have added on GunPartPicker so far in November 2026, behind the SureFire SOCOM556-RC3 Rifle Suppressor Black, with about 2% of all suppressors added to builds. Up from #14 in October. Builds with this suppressor are mostly chambered in 5.56 NATO (70%, then .223 Wylde 13%), split between mid-length (54%) and carbine-length (22%) gas systems, and mostly AR-15 (95%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 5 of the 6 retailers we track have it in stock. It dipped to $778.99 at KY Gun Company for a stretch in October 2026, under its usual $839, so sales do come around. Buying today, the lowest price is $778.99 at KY Gun Company, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which suppressor to pick?
We ranked every suppressor by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Suppressor Guide →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002
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
Geissele Automatics AR-15 16 Super Duty Stripped Upper Receiver Ddc
Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Dead Air Sierra 5 Rifle Suppressor & KeyMo Mount Kit
| Build | Parts | Total |
|---|---|---|
 | 19 | $4950.56 |
No reviews yet. Be the first to review this product!