Features 1. Compatible with a full range of FAST helmets, ACH helmets, and MICH helmets as long as they have arc rails on the sides 2. Tested to work perfectly with Comtac I and Comtac II headsets when used with this headset adapter 3. When mounted, the Comtac intercom headset separates from the arc-shaped headband and attaches directly via the hanging chain 4. Mounting buckles secure to both sides of the helmet rails; once installed, the Comtac headset rotates freely 5. Requires assembly, including removal of ear muffs from the headband and attaching them to the adapters These adapters are designed to work seamlessly with Comtac-style headphones. Assembly is required, primarily involving removing the ear muffs from the headband and snapping them onto the adapters. Provides a secure connection between headset and helmet. Specifications Material: POM + Stainless Steel Color: Black, Tan (Optional) Compatibility: Designed for use with Comtac I and Comtac II headsets on all series of FAST, ACH, and MICH helmets Package Weight: Approximately 65g Quantity: 2 pieces Assembly Instructions 1. Remove the cloth cover from both sides of the Comtac headset 2. Remove the headset cable from the headband (hoop may be needed for wrapping) 3. Attach the headset adapter to both sides of the headset 4. Secure the adapter to the helmet rails 5. Route the headset cable to the top section of the helmet and secure with tape Package Includes 2 x Helmet Rail Adapters (Helmet not included) Note Please note that either the updated version or previous version of this product may be shipped at random. Confirm acceptance of this condition before placing your order.