Oh crap! Now I have to track back as to why I ordered those - thought there was a direct link/reference. Maybe I got the part# wrong. I really had no clue how to pick one...
Thanks for checking it out!
Edit: found one reference here: https://budgetlightforum.com/t/-/31955 by RMM in the OP. Thought these were the ones Richard uses in general, not just this buck driver... Hhmmm.
I have two LDO parts at home. One came directly from Richard, the other I think I ordered from Mouser earlier - that's probably why I ordered these, though I never tried either one as of yet.