Firefighter GoPro helmet mount

Mounts on the lip of a firefighter or other helmet. Insert brass inserts in the two holes for either an 10-24 or an M6 threaded insert, using a soldering pen to fit them into the holes. Then use plastic (or metal, plastic won't leave marks in the helmet) M6 or 10-24 screws to tighten/attach to the helmet.

The nut that fits in the GoPro attachment is an M5 and that snaps into place without any adhesion.

Two versions, one with a .5" opening, the other at .25".