Helmet Rail Suspension Headset Support, 2pcs Helmet ARC Adapter Headphones Bracket Earmuffs Left and Right Side Attachments for Peltor Comtac - Walmart.com
3M PELTOR ARC Rail Adapter | Left & Right Side Attachments — Atomic Defense
ARC Helmet Rail Adapter for Peltor Comtac Sordin Howard Leight Headset Rotate | eBay