The Dead Air Muzzle Brake (Dead Air part no. DA101) is a 5.56mm muzzle device cut to a standard 1/2-28 thread, built around Dead Air’s Key Mount interface for their KeyMo suppressor lineup. It functions as a standalone muzzle brake to help manage recoil and muzzle rise on its own, while also serving as the mounting platform a compatible Dead Air suppressor locks onto. The included shim set lets you index the brake precisely so the Key Mount lugs line up the same way every time you attach a can. This is a muzzle device, not a suppressor itself, so it ships and installs like any other 5.56 muzzle brake.

Key Specifications

• Cut for 5.56mm caliber rifles.
• Threaded at 1/2-28, the standard AR-15 muzzle thread.
• Uses Dead Air’s Key Mount interface to accept compatible KeyMo suppressors.
• Includes a shim set for precise indexing of the mount.
• Material: black steel construction with a matte black finish.
• Measures approximately 2.6 inches overall.
• Bore diameter accommodates calibers up to 7.62mm/.300 Blackout.

Frequently Asked Questions

Is this brake itself a suppressor? No, it is a standalone muzzle brake that also serves as the mounting interface for a compatible Dead Air KeyMo suppressor; it is not a regulated NFA item on its own.

What is the shim set for? It lets you index the brake so the Key Mount lugs line up consistently each time you attach a suppressor.

Buy the Dead Air Muzzle Brake

Get your Key Mount interface dialed in before your suppressor ever arrives. Order this brake from our Lubbock, Texas gun shop and we will get it moving as soon as it is ready to ship, no FFL required for a standard muzzle device. Shop more from Dead Air Silencers or browse our suppressor accessories selection for more mounting options.