Dead Air KeyMicro Brake 9mm Bore Muzzle Device - 1/2-36

Dead Air KeyMicro Brake 9mm Bore Muzzle Device - 1/2-36

The Dead Air KeyMicro Brake is a compact, lightweight muzzle device engineered for shooters who want maximum versatility, smooth recoil control, and seamless suppressor compatibility. Built from rugged 4140 HT alloy steel and finished in durable black nitride, this single‑port brake delivers long‑term reliability while maintaining a minimalist footprint. On its own, it functions as an efficient recoil‑reducing brake—but when paired with the KeyMicro Adapter, it becomes a fast, secure mounting platform using the same proven technology found in Dead Air’s industry‑leading KeyMo system.

Designed with a 9mm through‑bore and 1/2×36 threading, the KeyMicro Brake is ideal for pistol‑caliber carbines and other compatible platforms. It arrives with a shim kit for precise timing and is suitable for pin‑and‑weld applications (not pre‑drilled). Whether you’re building a suppressor‑ready setup or simply want a durable, high‑performance brake, the KeyMicro delivers the precision and dependability Dead Air is known for.

Compact Single‑Port Design
Lightweight, minimalist brake that reduces recoil without unnecessary bulk.

KeyMicro & KeyMo Compatible
Works with the KeyMicro Adapter and KeyMo mounting systems for fast suppressor attachment.

9mm Through‑Bore
Optimized for pistol‑caliber platforms and .38‑caliber applications.

4140 HT Alloy Steel
Heat‑treated for exceptional strength and long‑term durability.

Black Nitride Finish
Corrosion‑resistant coating for enhanced wear protection.

Includes Shim Kit
Ensures proper timing during installation.

Long‑Term Reliability
Engineered to withstand heavy use and harsh conditions.

Specifications

• Material: 4140 HT alloy steel
• Finish: Black nitride
• Thread Pattern: 1/2×36
• Through‑Bore: 9mm / .38
• Length: 2.063"
• Weight: 3.41 oz
• Compatibility: KeyMicro Adapter, KeyMo Adapter
• Included: Shim kit for timing
• Pin‑and‑Weld: Yes (not pre‑drilled)