Found a clip for an Olight T10.

[jk904jk]

I took the clip off my RiverRock 1xAA light from target. It fits perfectly. It is very snug, it matches perfectly, grips the knurling well, bezel up or bezel down carry, and it gives good grip for twisting the head.

Olight T10

RiverRock 1xAA