Description
The Dead Air Sierra 5 KeyMo (MPN: SIERRA5KM) is a compact, dedicated 5.56 NATO suppressor packaged with Dead Air’s KeyMo mounting system and a 1/2x28 KeyMo flash hider. The Sierra 5 was designed for shooters who want a short hard-use rifle suppressor without giving up full-auto capability, flash reduction, or mounting flexibility.
Cobalt 6 & Stainless-Steel Construction
Dead Air builds the Sierra 5 around Cobalt 6 baffles and stainless-steel components joined into a durable welded structure. In the KeyMo configuration, the suppressor measures approximately 6.27 inches long, 1.5 inches in diameter, and weighs about 15.4 ounces. The included KeyMo adapter provides fast attachment to compatible Dead Air muzzle devices, and this package includes the common 1/2x28 flash hider for 5.56/.223 barrels.
Dedicated 5.56 Performance & Modularity
The Sierra 5 is rated for 5.56 NATO, .223 Remington, and other compatible .22-centerfire cartridges such as .224 Valkyrie. Dead Air lists the suppressor as full-auto rated with no minimum barrel-length restriction. Its front-cap architecture also supports compatible R-Series front caps and accessories, while the HUB-format rear interface allows other compatible mounting solutions if the KeyMo adapter is removed.
Key Features & Benefits
KeyMo Package: Includes the KeyMo adapter and 1/2x28 KeyMo flash hider.
Compact 5.56 Format: Keeps added length controlled on carbines and shorter rifle platforms.
Cobalt 6 Baffles: Hard-use internal construction designed for heat and erosion resistance.
Full-Auto Rated: Built for demanding firing schedules with no published barrel-length restriction.
Modular Mounting: HUB compatibility provides options beyond the included KeyMo configuration.
Specs
