Dead Air’s mission is to give No Quarter in design, performance and technology, and the Sierra 5 gives you everything you want from a dedicated 5.56 silencer. This is a hard-use can: no stainless baffles to cut cost or lifespan, no durability sacrificed to save ounces. If you do not get it red hot each time you shoot, Dead Air might be offended.
Built for professional use, it balances sound and flash suppression in a compact, light package. HUB (1.375-24) adapters let it be configured to your needs; out of the box it comes with KeyMo or Xeno (the Xeno version includes a 1/2-28 flash hider and adapter). Welded Cobalt 6 baffles in a stainless tube.
- Caliber rating: 5.56 NATO, .224 Valkyrie (2,200 ft-lb)
- Length: 4.87 in (no adapter) / 5.72 in with Xeno
- Diameter: 1.5 in
- Weight: 10.8 oz (no adapter) / 13.3 oz with Xeno
- Mount: Xeno or KeyMo (adapter and muzzle device included); HUB
- Threads: 1/2-28 flash hider included
- Material: Cobalt 6 baffles, stainless tube; black Cerakote
- Full-auto rating: Full-auto rated, no barrel length restrictions
- Warranty: Dead Air lifetime
MSRP $899 to $979 depending on mount. Sold to order by Precision Shooting LLC, an authorized Dead Air dealer (MSRP shown: KeyMo or Xeno). NFA suppressor transferred on ATF Form 4 through Precision Shooting LLC (Type 07 FFL / Class 2 SOT); the federal transfer tax has been $0 since January 2026.
