ModSlots are great, they allow for modular and secure attachment points for any Holstery holster or pouch. Removing Holstery holsters from the ModSlots can be tricky though. Below is an instructional video on how to do just that.
The method described in the video is the down, slide, up method. You press the holster down towards the bottom the attached ModSlot, slide the holster to the right or left to disengage the bottom of the clip, then pull upwards to remove the holster.
Have More Questions? Check out The Ultimate Guide to Professional Tool Belts and Holsters
