Try a few drops of light oil down the hose connector and run it.
How did the nail get shot? Did he catch the plate on something to fire it unintentionally? Those things make me nervous. I've never used one, but I've cleaned up after them enough.
Yes, yes it is... And shooting at coworkers is more fun. Not that I would have ever done something so immature...Air staplers have about a 25' range and are a God send to over worked, underpaid teen roofers!It is possible to take a hammer or cat's paw or something, pull the safety tab back, and pull the trigger to shoot nails at a piece of insulation foam or the like to play Paslode darts....