The Earmor ARC M31/M32 helmet mount adapter is compatible with Earmor/OPSMEN hearing protectors and ARC-compatible helmet rails. The package includes an adapter for the left and right earcup.
English product name: Earmor ARC Helmet Rails Adapter Attachment Kit
Manufacturer product code: M11
Difference between M11 and M12
M11: Compatible with ARC helmet rails (Ops-Core FAST MT and its replicas). The M11 allows active hearing protectors to be easily mounted on a helmet with ARC rails.
M12: Compatible with EXFIL helmet rails (Wendy Helmet). The M12 allows active hearing protectors to be easily mounted on a helmet with EXFIL rails.