For safety, while flying in backcountry or in case of an emergency, I protect my head against Cessna A-pillar with a Team Wendy SAR Tactical helmet. Recently my old headset died and I upgraded to David Clarke One-X. I engineered a new 3d printed Peltor mount for ear cups. DC’s have great design, where I attached an adapter onto existing #4-40 post and bolted through it. PLA here works only in compression.

followup:

The stl model is available here: https://www.thingiverse.com/thing:6210857 thingiverse.com/thing:6210857