https://youtu.be/rQKBn5M_pHI

I have been trying to find a holster for my mk23 forever and especially so I can use my osprey and ir light. Stumbled across these for airsoft... very interested and might try one for kicks

That looks like an absolutely terrible design for a holster, not only is the trigger exposed but the holster itself goes into the trigger guard. For airsoft ok whatever but it sounds like an accident waiting to happen with a firearm.

Autoweapons.com has some of the original LBT holster design.  Huge, tons of flaps and buckles, but it's probably the only thing that will work for a 23 with can and light attached.

They're priced like something only autoweapons.com has.

Blade-Tech has made them before. Pretty sure they'll custom make one for whatever attachment you want on one also. Call and ask them.

https://blade-tech.com/pages/product-result?rq=mk_h-k~md_mark-23

These are their standard ones I guess, but I have an old one molded to take a PEQ-6

Try the Blackhawk Omega VI Elite holster. It’s a drop leg rig that can be reconfigured to wearing on a belt. It accommodates a light as well and they come in black or OD.

I have one for my MARK 23 with a Steiner DBAL-PL laser / light combo. Took the holster and did some cut & trimming on straps so the thumb break works. It’s not a quick draw rig, but it’s secure and reliable unlike that plastic crap in the OP.