#html-body [data-pb-style=O8NBIU8]{display:none}#html-body [data-pb-style=RIIAHXA]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}The Sierra 5 is the ultimate 5.56 suppressor built for hard use. This isn't just another 5.56 silencer - the Sierra 5 delivers everything you demand from a dedicated rifle suppressor. We refuse to compromise on quality. Unlike some competitors, we don't cut corners with stainless steel baffles or sacrifice durability for weight savings. The Sierra 5 is full-auto rated with no barrel length restrictions, ready for any challenge you throw at it. Its distinctive knurling isn't just for looks; it's a functional design element perfectly aligned with the Sierra 5's mission. In fact, we encourage you to push the Sierra 5 to its limits - if you're not running it red hot, we might be offended!Engineered for professional use, the Sierra 5 achieves the ideal balance of sound and flash suppression while maintaining a compact size and minimal weight. Its HUB compatible (1.375-24") mounting system offers unparalleled versatility, allowing you to customize your setup with a variety of adapters. The Sierra 5 is available out-of-the-box with either our KeyMo or Xeno mounting system, providing immediate options for your specific needs.The Sierra 5's winning formula combines welded Cobalt 6 baffles within a durable stainless steel outer tube. This proven design ensures top-tier performance and exceptional longevity. The Sierra 5 is truly the last 5.56 suppressor you'll ever need. The Sierra 5 KeyMo package includes a 1/2-28 KeyMo flash hider and a KeyMo adapter for your convenience.Experience the thrill of a suppressed 5.56 with the Dead Air Sierra 5 KM. This silencer tames the violent muzzle blast into a soft, manageable thud, virtually eliminating recoil and flash. Stay on target with total clarity and protect your hearing during every high-intensity range session. Mount it instantly with the rock-solid KeyMo adapter and 1/2-28 flash hider. Upgrade at PSA with $0 tax stamps and fast 2026 digital approval. This premium kit ships right to your door, making the wait for a smoother, high-performance rifle nearly zero. Elevate your tactical build today.