The Dead Air KeyMicro Brake 5/8×24 (Dead Air part no. DA111) is a short, lightweight single port muzzle brake for a range of platforms. Dead Air designed it for the KeyMicro Adapter, though it works as a minimalist brake on its own, and it is also compatible with the KeyMo Adapter. This version is cut for 5/8×24 with a 9mm bore. It is made of 4140 HT alloy steel with a black nitride finish. Pair it with the adapter and it becomes the quick mounting platform the KeyMicro system was built around.

Key Specifications

• The thread pitch is 5/8×24, the pitch this version is cut for.
• The through bore is 9mm, as Dead Air lists for the KeyMicro muzzle devices.
• The brake has a single port design, kept short and light for compact setups.
• Construction is 4140 HT alloy steel, chosen for strength in a part that sees muzzle blast.
• The finish is black nitride, a hard surface treatment.
• A shim kit is included in the packaging, used for timing the brake.
• It works with the KeyMicro Adapter and the KeyMo Adapter, or stands alone as a brake.

Frequently Asked Questions

Does the KeyMicro Brake come with timing shims? Yes. Dead Air says KeyMicro brakes ship with an included shim kit in the packaging for timing the brake.

What adapters does it work with? It is designed for the KeyMicro Adapter and is also compatible with the KeyMo Adapter. It can also be used alone as a minimalist brake.

What bore size do KeyMicro muzzle devices have? Dead Air states that KeyMicro muzzle devices feature a 9mm bore, and this 5/8×24 version is listed with a 9mm bore.

Buy the Dead Air KeyMicro Brake 5/8×24

A small brake does a lot for felt recoil and also doubles as a mount point for a KeyMicro system. The 5/8×24 version is the one to order if that is the thread on your barrel. Order it from our Lubbock, Texas gun shop for fast direct shipping, and see our other suppressor parts and accessories to round out the setup.