Here's how to install a slide stop without worrying about leaving an "idiot mark"
- press top of slide against stomach
- hold front of gripframe with left hand
- hold bottom of dust cover with right hand
- hold tip of left thumb against frame and bottom of slide stop
- hold tip of right thumb against slide and top of slide stop
- press slide stop into place with ball of right thumb
As long as you keep your thumbs firmly on the gun above and below the slide stop, it can't slip away and scratch the gun.
