Dead Air Keymo Deadair Da161 Keymo Muzzle Brake .46 5/8-24

The Dead Air Keymo muzzle brake in 5/8-24 thread (.30 caliber) is built for shooters who want a world-class brake now and the option to run a suppressor later. Dead Air's sealed taper design keeps carbon fouling minimal, so your Sandman Series or other KeyMo-equipped suppressor won't lock onto the mount during extended shooting sessions. That's the engineering detail that separates a truly modular rifle setup from a paperweight on your bench when you need to swap gear in the field.

Whether you're running this as a standalone brake or as the foundation for suppressed shooting, the KeyMo gives you flat shooting and reduced concussion compared to traditional muzzle brakes. The 4140 HT alloy steel construction with black nitride finish handles serious use without flinching. At 4.10 ounces and 2.82 inches long, it doesn't add unnecessary bulk to your barrel—just capability.

The KeyMo platform solves a real problem: you can run the same brake-to-suppressor interface across multiple rifles without hunting for oddball adapters or worrying about compatibility. If you're building out a suppressor ecosystem or planning your first step toward quieter shooting, this brake is the logical starting point.

Key Features

• Sealed taper design prevents carbon lock-up when removing suppressors
• Compatible with Dead Air Sandman Series and all KeyMo-equipped suppressors
• Functions as a high-performance standalone muzzle brake
• 4140 HT alloy steel with black nitride finish for durability
• Lightweight and compact at 4.10 oz and 2.82" length

Specifications

Frequently Asked Questions

Will this brake work with my Dead Air suppressor?

Yes, the KeyMo brake is compatible with Dead Air Sandman Series suppressors and any suppressor equipped with the KeyMo interface. The sealed taper design also helps prevent carbon buildup between the brake and suppressor during use.

Can I use this as a muzzle brake without a suppressor?

Absolutely. The KeyMo brake functions as a standalone muzzle device and delivers flatter shooting with reduced concussion compared to traditional brakes, whether you attach a suppressor or not.

What firearms does this fit?

This brake is threaded 5/8-24 and chambered for .30 caliber barrels. It will fit any rifle with a 5/8-24 threaded barrel in .30 caliber (such as .308 Winchester, 6.5 Creedmoor, .300 Win Mag, and similar rounds). Verify your barrel's thread pitch and caliber before purchase.

Does this come with a pin and weld hole?

No. This model does not feature a pre-drilled pin and weld hole, so it is not designed for permanent installation. It threads onto your barrel and can be removed or swapped as needed.