i can haz 590 trigger group?
who has one laying around they dont want?
Seriously doubt you'll find anyone here with one that's not in use.
Brownells is the only place I know of that keeps the 590A1 trigger assemblies in stock on a regular basis...
http://www.brownells.com/shotgun-pa...ards/mossberg-trigger-assembly-prod24369.aspx
All said, we've seen folks here "upgrade" their housing to metal on occasion but it's always been for aesthetic reasons. The factory 500 housings are solid. You'll wear out metal parts in the action before the poly trigger housing...