Engineered for serious shooters who demand reliability in a compact package, the Dead Air Sierra 5 KM delivers professional-grade sound and flash suppression for 5.56 NATO platforms. This dedicated 5.56 suppressor combines Dead Air's proven No Quarter design philosophy with a fully welded Stellite baffle core, ensuring exceptional durability during extended firing sessions without compromising on weight or length. Key Features Fully welded Cobalt 6 baffles in a stainless steel outer tube provide unmatched strength and heat resistance for full-auto use KeyMo quick-detach mounting system includes the adapter and 1/2-28 flash hider for fast, secure attachment and repeatable zero HUB-compatible 1.375-24" rear socket allows easy swaps to Xeno, direct thread, or other adapters for maximum versatility Knurled stainless tube offers superior grip for installation and removal while accommodating heat-protective wraps Interchangeable R-Series front caps including flash hider and E-Brake options for customized performance Technical Specifications Caliber Rating: 5.56 NATO, .224 Valkyrie Energy Rating: 2200+ ft-lbs Length: 4.87 inches (no adapter); 6.27 inches (with KeyMo adapter) Diameter: 1.5 inches Weight: 10.8 ounces (no adapter); 15.4 ounces (with KeyMo adapter) Materials: Welded Stellite baffles, stainless steel tube Finish: Black Cerakote Full-auto rated with no barrel length restrictions Why Choose the Dead Air Sierra 5 KM Whether you're running an SBR, pistol, or standard carbine, this suppressor solves common pain points like excessive length, weight, and mounting hassle. The compact profile maintains maneuverability while the advanced baffle design minimizes blowback and pressure impulse for a more comfortable shooting experience. Its modular design future-proofs your investment, allowing configuration changes as your needs evolve. Built for hard use in professional and recreational environments alike, the Sierra 5 KM provides consistent, reliable performance round after round. Common Questions Answered Invest in a suppressor that prioritizes function and longevity. The Dead Air Sierra 5 KM with KeyMo adapter is ready to enhance your 5.56 setup today.