Home Forums Birds & Dogs Shotguns Western Field 550cd - 20GA: Looking for info?

LGS has a Western Field 550cd pump action 20-GA for chump-change/pennies. It's missing a few non-critical parts, but functions fine. I understand that Mossberg made these for Montgomery Ward long ago...). LGS-dude (very knowledgeable) says it is a re-badged Mossberg 500. Anybody have any experience with these? Do Mossberg 500 replacement barrels work if I wanted to add a slug barrel? Other parts interchange?

Thanks for any assistance.