DogDoc,
The Glock Carry Clip comes with a new Slide Cover Plate that is drilled and tapped for the two included screws. The Slide Cover plate is removed and replaced with the new one, then the clip is attached with the two screws. It goes on either side of the slide, as per your preference. You just slide the gun into your waistband with the clip between your pants and the belt. Conceals better and is more comfortable than any IWB holster I have ever tried. Some question the safety of this type of carry. I feel that it is quite safe as long as you don't pull the trigger! Use extra care as you slide the gun into your pants. I use my trigger finger to guide and shield the trigger as I slide it in my pants. This is the only IWB carry that I use these days. I bought mine at a gunshow for abour $20. Here is a link where you can buy them online. 1stoptaticalgear.com/glockaces.htm
Savage