Dead Air Silencers Sierra 5 XM 5.56mm QD Silencer, KeyMo Mount

Out of stock
as of 04/15/2024 2:26PM CST
Store Inventory
Available OnlineOut of stock
Fountain Valley, CAOut of stock
The Colony, TXOut of stock
UPC: 810042342637

This item has to be shipped to a licensed class III dealer. All NFA rules apply.

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The Sierra 5 is a dedicated hard-use 5.56 suppressor and utilizes stainless steel baffles and stainless outer tube. The Sierra 5 is full-auto rated with no barrel restrictions. Offering the perfect balance of overall sound and flash suppression while having a compact footprint and minimal weight. Using a HUB compatible mounting adapters, the Sierra 5 is available for the KeyMo or Xeno mounting system.

Ships with a KeyMo adapter and 1/2x28 KeyMo Flash Hider.

Flash hider front cap-The included flash hider front cap aids in excellent visual signature reduction.
Interchangeable front caps-The Sierra-5 is compatible with all R-Series front caps, including the E-Brake.
Fully-welded construction-All Stellite® baffles and full penetration laser welding ensures a robust and solid monolithic core structure. Then welded to the outer tube for additional strength and durability.
The Sierra-5 is optimized specifically for high-performance out of the 5.56 platform in sound and flash suppression, while maintaining a low blowback, short pressure impulse.
Mounting modularity-The Sierra-5 XM ships with the complete KeyMo system (adapter and flash hider). But thanks to the 1.375-28″ HUB socket you can change your mind without regret. The Sierra-5 features a small hole drilled through the blast chamber making it possible to pin & weld your adapter or insert to the suppressor.
Utilitarian design-The outer tube is knurled to provide a strong purchase for securing and removing the silencer. It also serves extremely well in securing heat-protective wraps. The Sierra-5 also boasts heavy lug tooling features allowing for secure tightening and loosening adapters with included tools.


CALIBER RATING 5.56 NATO, 224 Valkyrie
ENERGY RATING 2200+ ft lbs
LENGTH (NO ADAPTER) 4.87 inches
LENGTH (W/KEYMO) 6.27 inches
DIAMETER 1.5 inches
WEIGHT (NO ADAPTER) 10.8 ounces
WEIGHT (W/KEYMO) 15.4 ounces
MATERIALS Stellite® baffles, stainless steel
FINISH Black Cerakote®

*Not available for California and Restricted States.

This item has to be shipped to a licensed class III dealer. All NFA rules apply.

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