The Unity Tactical MARK (Modular Attach Rail Kit) for Ops-Core AMP headsets delivers a ultra-low-profile mounting solution designed specifically for Busch PROtective helmet rail geometries. By migrating communications gear directly to the helmet's upper rail channels, it enables operators to utilize headsets on helmets lacking rear structural rails, such as the Crye Precision AirFrame. The aggressive mechanical geometry completely eliminates the bulky, spring-loaded "pop-in/pop-out" mechanisms found on standard legacy mounts. Instead, the ear cups are simply pulled slightly away from the ears and rotated backward along the helmet's frame for streamlined stowage. This continuous wire-tension configuration maintains a far tighter, customizable fit against various head shapes, significantly enhancing the earcup's seal to maximize its Noise Reduction Rating (NRR).