Nail gun ?'s-I Need little help

Longmont CO

Description

Well this has to be something I'm just not catching! Started with one and tried others and all nail guns are NOT SHOOTING NAILS. Wants to fire and shoot drive piston pin down. Can't see why 3-4 guns took a shit at the same time! Tried compressor setting,got new stupid numatic oil,pulled reset cartridge... Nice newer guns. Need assist from a Pro!!