Peltor ARC adaptors, left and right side attachment kit
ARC Rail Adapter Fast Ops Core Helmet ARC Rail Airsoft Military Tactical Headset Accessories for Peltor COMTAC Headphones|Earphone Accessories| - AliExpress
EARMOR Tactical Headset ARC Helmet Rails Adapter for 3M Peltor Comtac Headset – EARMOR STORE
3M PELTOR Accessory Rail Connector (ARC), Helmet Rail System Mounting Attachment Kit, Left and Right Side Attachments, Conversion Kit for FAST Helmet Rail Connection System, Military Tactical Industry: Amazon.com: Tools & Home
3M Peltor ARC Adapters, Left & Right Side Attachment Kit - MOD Armory