Amazon.com : DLP Tactical Helmet ARC Rail Adaptor Set Compatible with Peltor ComTac Headsets (Black) : Sports & Outdoors
Helmet Rail Suspension Headset Support, 2pcs Helmet ARC Adapter Headphones Bracket Earmuffs Left and Right Side Attachments for Peltor Comtac - Walmart.com
Tactical headset helmet mount ARC track adapter COMTAC mount for Peltor Comtac series noise reduction headset DE - AliExpress