The Emerson FAST Helmet replicates the feel of the mil-spec FAST helmets through extraordinary attention to detail, from the OCC-DIAL adjustable headband to the accessory rail connector (ARC) interface built into the shell. The ARC allows users to mount a wide range of optical gear, armor, and other accessories to your Emerson FAST Helmet. Modern warfighters appreciate the FAST helmet's significant weight savings over previous technology, and the ability to mount night vision equipment directly to their helmets.