Trying to attach a holster to my pistol belt via the QLS forks so I can swap out to .22 for low cost training and reps. Can’t see to find anyone that makes such a thing, either that or my Google-fu is lacking. Any ideas?

You can get a Neptune Concealment Chronos for the M&P 22 Compact. The standard hole spacing on it is BladeTech but you can get one made with the Safariland hole spacing. I have one like this for my M&P9L and it will work with all 3 (BladeTech, BlackHawk, Safariland). It's been awhile since I got mine but I'm sure they still have the mold jig.