Every one in a while something comes your way, and it rattles your brain. This one of those; customer has an ATIS shotgun imported by Interarms made in Bresica Italy. It appears the carrier spring in missing, and such the carrier dog etc will not function, so it doesnt pick up the fresh cartridge etc. I have exhausted all my normal sources in trying to just locate a schematic to see what it is suppose to look like. Best scenario would be able to find the parts. If anyone out there can help me, I will forever be in your debt.