Dark mode is

Cobalt Kinetics RCB-KM Dead Air Keymo Mount Flash Hider

Flash Hider

As low as: $100.21
Out of stock

Cobalt Kinetics RCB-KM Dead Air Keymo Mount Flash Hider

Rainier Arms Free Ground Shipping

The RCB family is Cobalt Kinetics solution to solve excessive side blast/ concussion out of large port brakes. Their approach was a simple one, to control the expanding gasses exiting the gun so that they can be used to aid in quicker follow up shots. Cobalt Kinetics accomplished this by designing a port system that optimizes the available gasses without bringing about un-necessary turbulence/ concussive energy back to the shooter.

The result is an eloquent solution that; controls muzzle climb, helps improve split times on follow up shots, and kills excessive muzzle flash. The finest attention to detail was also paid to the material selection, coatings, and tolerances on these units to provide the best possible option for your recoil mitigation needs.

The RCB’s can also be pin/ welded to allow for a 16” OAL on barrels ranging from 13.7” and up. Check out the specs below and see why the Cobalt RCB is the solution that you have been waiting for.

The RCB-KM models are available in 1/2X28 tpi and 5/8X24 tpi. They will support any suppressor that uses a DeadAir Silencers “KeyMo” quick disconnect adapter.

Key mount is a licensed feature from DeadAir Silencers.



  • Length: 2.75″
  • Weight: 1.7 oz
  • Material: 4140 Steel
  • Coating: Nitride
  • RC Hardness: 32-34 RC
  • Tread pitch: 1/2x28 tpi / 5/8x24 tpi
  • Calibers: 5.56 x 45mm (NATO) / .30 cal
More Information
Product Type Flash Hider
Manufacturer Cobalt Kinetics
Google Customer Reviews Google Customer Reviews