MARK™ provides seamless integration of electronic hearing protection/communication headsets with headborne systems. Designed to reduce the overall profile of mounted communication headsets and improve the seal of the ear protection, MARK™ is the lowest profile headset helmet mount on the market. Rather than using a traditional pop-in/pop-out mechanism, MARK™ allows the ear cups to be pulled away from the ears and rotated backwards for stowage. Given the variance in head shapes and sizes, eliminating the pop-in/pop-out mechanism yields a tighter seal for the ear cups, resulting in a higher Noise Reduction Rating (NRR). MARK™ is compatible with most major helmet rail types for attachment of many popular electronic hearing protection. ONSC carries both the 3M Peltor and the Opscore AMP versions. Other models available by special order. Contents Peltor Version: Two (2) MARK™ Wire Forms for 3M™ Peltor™-Style HeadsetsTwo (2) ARC Rail Adapter Plates (ARC variants only) Four (4) 10-32 x 7/16 Screws (ARC/EXFIL® variants only)Four (4) 10-32 x 5/16 ScrewsFour (4) Capture Nuts Compatibility: Many popular electronic hearing protection, including 3M™ Peltor™ ComTac™ and similar, such as: Most 3M® Peltor® COMTAC/SWAT-TAC/Sport-TAC/Tactical6 Headsets Most MSA / Sordin Supreme Pro™ Headsets (requires SARA™ adapters) Most TCI Liberator™ Headsets (requires SARA™ adapters) Most TEA Hi-Threat™ Headsets (requires SARA™ adapters) RAIL MOUNT Ops-Core® ARC Team Wendy® EXFIL® RAIL 2.0 and 3.0 M-Lok Adapters Sold Separately CONTENTS AMP Version: Two (2) MARK™ Wire Forms for Ops-Core® AMP® Communication Headsets Two (2) ARC Rail Adapter Plates (ARC variants only) Four (4) 10-32 x 7/16 Screws (ARC/EXFIL® variants only)Four (4) 10-32 x 5/16 ScrewsFour (4) Capture Nuts Note: Ops-Core Clamps are NOT included COMPATIBILITY Ops-Core® AMP® Communication Headsets RAIL MOUNT Ops-Core® ARC Team Wendy® EXFIL® RAIL 2.0 and 3.0 M-Lok Adapters Sold Separately MATERIAL Polymer WEIGHT OZ: