I had some down time at home and figured I'd practice drawing from the holster and dry fire. While trying different things I had pulled back my slide (without a magazine) let it slam back into battery and when I pulled the trigger, the slide came forward (as if it were being disassembled). After playing around a bit, trying to re-create what I did, I figured out that if I draw and chamber (as if I carried in position 3/un-chambered) the slide comes forward too far. LET ME BREAK IT DOWN: 1-Glock 23, Gen4 2-I drew from a holster. 3-I did not have a magazine inserted therefore I did not use dummy rounds. 4-I had my hands in the surrender position, drew from the waist, and pulled the slide using the overhand method, letting the slide slam forward. 5-Once every 20-30th time drawing, the slide came forward as if it were being broken down or field stripped. I did search if this had happened to anyone else and didn't see anything. I also tried a google search without any results. I am assuming that this is not something that happens too often because there are a lot of factors involved to create this situation (drawing from position 3, practicing without a magazine or training rounds, etc.) Any ideas?