Just fyi - there's more info on the F30B over here: https://budgetlightforum.com/t/-/32415.
I got mine apart - no glue on mine from BangGood. The driver retainer ring gave me a hard time only because it's CW to loosen (reverse threaded). Bigger reflector than a X6 or D80, slighter wider in I.D. and deeper than a D80, much wider in I.D. than an X6.