Gunfighters Inc has a drop down panel. I like mine. Can drop pack and retain pistol.
This is money. Great system.Tek lok
Again, looking for a universal accessory that can secure any sidearm/any holster for quick transfer from pack to pants.
I've been using a simple paddle holster with my G20 for a few years now without a single issue. It can easily attach to my pack belt, and it just as easily attaches to my pants/belt and rides on my hip.
Such holsters are fine for everyday carry but not ideal if you're tumbling down a mountain.