Dead Air Sierra 5 KM w/ KeyMo Adapter & 1/2-28 KeyMo FH

From the beginning, Dead Air's mission has been to give No Quarter in design, performance, and technology. The Sierra 5 stands true to that mission by giving you everything you want out of a dedicated 5.56 silencer.

This is a hard-use silencer. Dead Air are not cutting costs or decreasing lifespan by using stainless steel baffles. They are not sacrificing durability in search of saving a few ounces. The Sierra 5 is full-auto rated with no barrel length restrictions. Love or hate the knurling, it’s function over form, directly inline with their goal when developing the Sierra 5.

Built for professional use, it offers the perfect balance of overall sound and flash suppression while maintaining a compact footprint and minimal weight. By utilizing HUB compatible (1.375-24”) mounting adapters, it can be configured to the end user’s specific needs and is available out of the box with either their KeyMo or Xeno mounting system.

Featuring the proven winning combination of welded Cobalt 6 baffles wrapped in a stainless outer tube, Sierra 5 is the last 5.56 suppressor you’ll need.

The Sierra 5 KeyMo includes a 1/2-28 KeyMo flash hider and a KeyMo adapter.

The included flash hider front cap aids in excellent visual signature reduction.

The Sierra 5 is compatible with all of our R-Series front caps, including our E-Brake.

All Cobalt 6 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.

The Sierra 5 KM 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.

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.

Specs: 

• Caliber Rating: 5.56 NATO, 224 Valkyrie
• Energy Rating: 2200+ ft lbs
• Bore Diameter: 5.56mm
• 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: Cobalt 6 baffles, stainless steel
• Finish: Black Cerakote
• Usage: Ideal for heavy firing schedules
• Barrel Restrictions: None
• Full Auto Rated: Yes