Introducing the all-new 5.56 silencer from Dead Air Silencers. From the beginning our 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. We are not cutting costs or decreasing lifespan by using stainless steel baffles. We 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 our goal when developing the Sierra-5. Frankly if you don't get the Sierra-5 red hot each time you shoot it we might be offended. - 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 our KeyMo or Xeno mounting system. - Featuring the proven winning combination of welded Stellite baffles wrapped in a stainless outer tube Sierra-5 is the last 5.56 suppressor you'll need. - The Sierra-5 Xeno includes a 1/2-28 Xeno flash hider and a Xeno adapter. Check out the Sierra-5 KeyMo if you prefer a KeyMo system out of the box. - Specifications - Caliber Rating: 5.56 NATO 224 Valkyrie - Energy Rating: 2200+ ft lbs - Bore Diameter: 5.56mm - Length (no adapter): 4.87 inches - Length (w/Xeno): 5.72 inches - Diameter: 1.5 inches - Weight (No Adapter): 10.8 ounces - Weight (W/Xeno): 13.3 ounces - Materials: Stellite baffles stainless steel - Finish: Black Cerakote - Usage: Ideal for heavy firing schedules - Barrel Restrictions: None - Full Auto Rated: Yes