Top 10 Best Manual Staple Guns For Upholstery in 2021- craftsman manual staple gun stopped working ,14/8/2020· When not in use, ensure the staple gun with the handle lock to make it easy to store in your drawer, storage box, tool bags, etc. Pocket clip allows for easy carry when working multiple projects. The staple gun is equipped with a quick-release loading magazine on the bottom for fast and easy staple/nail install, and a patented mechanism to prevent jams.stanley electric staple gun stopped workingStanley Electric Stapler and Brad Nail Gun #057-7822-8 $49. Stanley manual staple gun stopped working handle would click and go down and not shoot out staple. If you notice that your gun is jammed, never try to dislodge it by repetitively pulling the trigger. Just stopped working as i was using it.