POP STANLEY EMHART AIR RIVETER RIVET GUN TOOL PNEUMATIC PRG510A

Description

Gun is working?  I hooked it up to a compressor and you can hear it go off when you pull the trigger.  I have several sizes of nail gun and it certainly sounds similar to when they fire.  That said, you can feel air come out from the trigger when you pull it --- and I'm not sure if that's supposed to happen or not.  Air also comes out from the vents in picture 4.  Some of the vents are taped over, some are not.  My guess is that this was the previous owner's method of regulating the air pressure?  Air also comes out though the bottom hole (center of picture 5).  Again, my guess is that this is supposed to happen, since there's a hole there.