Personally I wouldn't recommend running gen1 on a helmet anyway, but that's just my personal opinion =p
There's no real way to keep it steady on the J-arm either, PVS-14s have a short slot in them next to the screw hole which corresponds with a short ridge on the J-arm. This keeps it from shifting side to side without the use of two mounting holes.
The yukon has two mounting holes, but no conversion arm for a rhino mount
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