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, and it is also compatible with the KeyMo Adapter, though it works as a minimalist brake on its own. This version is cut for 5/8×24 with a 9mm bore, and it is made of 4140 heat-treated alloy steel with a black nitride finish. Pair it with the adapter and it becomes the quick mounting platform the KeyMicro system is built around.

Key Specifications

• The muzzle thread is 5/8-24, the pitch that decides which barrels this version fits.
• The through bore is 9mm, which Dead Air lists for every KeyMicro muzzle device.
• Material is 4140 heat-treated alloy steel, a strong steel for heat and repeated mounting.
• The finish is black nitride, which adds corrosion and wear resistance.
• Overall length is 2.063 inches, short enough to keep the muzzle compact.
• Weight is 3.41 ounces, as Dead Air lists for the KeyMicro Brake.
• The design is a single port brake, a short, lightweight take on recoil control.
• It is designed for the KeyMicro Adapter and also works with the KeyMo Adapter.
• A shim kit ships with the brake, for timing it on the muzzle.
• On its own it functions as a minimalist muzzle brake, so it is useful bare as well as with an adapter.

Frequently Asked Questions

What thread is this KeyMicro Brake? This is the 5/8×24 version, listed by Dead Air as 5/8-24. The other KeyMicro Brakes are cut for 1/2-28 and 1/2-36.

Can I run it without the adapter? Yes. Dead Air says it functions as a minimalist brake on its own, and it can be paired with the KeyMicro Adapter later.

Which adapters are compatible? The KeyMicro Adapter it was designed for, plus the KeyMo Adapter.

Buy the Dead Air KeyMicro Brake 5/8×24 Single Port, 9mm Bore

The 5/8×24 thread covers a lot of rifles and a few pistol caliber carbines, so this is the KeyMicro brake with the widest reach. It is small enough to leave the front of the gun balanced, and it works with the adapter later if you decide to add one. See more in our silencer parts and accessories, and order from our Lubbock, Texas gun shop for fast shipping.