USED Dead Air Armament Key-Mo. The Key-Mo(TM) also gives your SilencerCo Omega a much-needed upgrade. Simply unscrew your existing mount" and thread the Key-Mo on. Your silencer is now compatible with the Dead Air Key Brake and Flash Hider - giving you the best mounting system in the industry. Specifications for Dead Air Armament Key-Mo: Manufacturer: Dead Air Silencers Color: Black Finish: Black Gun Make: Omega Features of Dead Air Armament Key-Mo: 4.5 oz. weight Package Contents: Dead Air Armament Key-Mo