https://imgur.com/a/CamURz0
https://www.brainexplodermerch.com/product-page/adjustable-nvg-mount-gopro-style
The shroud mount's tabs have been removed to fit in spec shrouds.
https://www.shapeways.com/product/MUMABF82F/hat-mount-gopro-hero-9-10-11-compatible
each: $20 FTF @ 94089 or 95073; $25 shipped
CONUS shipping quoted. Elsewhere is negotiable.