Dead Air DA421 GSG 1911 Thread Adapter 1/2x28 Nitride Black

The Dead Air DA421 is a precision thread adapter built to mount the popular Dead Air Mask rimfire suppressor family onto a GSG 1911 pistol chambered in .22 LR.

It converts the host pistol's factory M9x.25 thread pattern to the industry-standard 1/2x28 pitch, allowing direct attachment of any 1/2x28-threaded rimfire suppressor or muzzle device. The adapter installs between the barrel and the suppressor and uses an O-ring engagement for a secure, repeatable lock-up that resists loosening during firing.

Finished in a durable Black Nitride coating, the DA421 carries the build quality and fit precision Dead Air is known for across its suppressor accessory line.