Dead Air KeyMicro Brake 9mm 1/2x36 Black Nitride Muzzle Device

The Dead Air KeyMicro Brake (DA110) is a compact, lightweight single-port 9mm muzzle brake purpose-built for pistol-caliber carbines and pistol hosts running Dead Air's KeyMicro suppressor mounting system. Machined from 4140 HT alloy steel and finished in a low-glare black nitride coating, it provides a rugged, repeatable shoulder for direct-thread suppressor attachment while still functioning as a serviceable stand-alone brake on its own.

Installation is straightforward - the brake threads onto any barrel cut with the 1/2"-36 thread pattern that is standard on most 9mm PCC and pistol platforms. A single side port redirects a portion of the propellant gas to help tame muzzle rise and felt recoil during rapid fire. At just 2.063" long, the KeyMicro Brake keeps overall firearm length in check while delivering the concentric, snag-resistant seating surface Dead Air's KeyMicro adapters and compatible micro suppressors lock onto with confidence.

Beyond its brake function, the KeyMicro Brake is the foundation of the KeyMicro mounting ecosystem, allowing shooters to quickly attach a compatible suppressor without tools. The black nitride finish resists wear, corrosion, and carbon fouling, keeping the device serviceable through heavy range use and in adverse field conditions. Whether you are building a dedicated 9mm PCC or running a KeyMicro-equipped pistol, this brake delivers a solid blend of recoil control, suppressor-readiness, and durability in one compact package.