By how many pins are visible going through the frame. If you have light rails on your 19 it is a 3 pin.
I "think" I have an extended slide stop lever if that's what you're after Lars. I can pop it in for you also, just let me know.
No problem. I just wanted to make sure I acquire the right slide stop. The one on the gun.... sucks.
Glock!? Slide Stops? You guys actually use those???!!111!!! Just throw on some skateboard tape and remember gross vs. fine motor skills in a fight.
The gun he has has an extended one which I would want to change out as well. I am guessing he wants something closer to stock.