Bostitch ,Model N66C
 

Got a good price on 3 Bostitch nailers but,one dose not work ? When i position to nail saftey moves back into position .pull the treigger air will discharge from the trigger nothing happens, plunger moves freely,the advance mechism is free can not tell if this area is getting air or not. If disassembly is required please give me a heads up on the process.
Thanks

Sounds like one of the seal o-rings is gone inside. Easy to repair.

Thanks for the info