put a picture of it up, could be a firing pin retainer, extractor pin, posibly for a firing pin block. not really familiar w/ that gun off the top of my head but a pic is worth a thousand words.
i checked out there web site parts list didnt see it listed. also i have had others to tell me to get rid of it because it could blow up in your hand ect. so far it was a really accurate little pistol??
Dump it in the river. Most certainly don't travel with it as several states have saturday night special laws and these are banned. The die cast metal is much like a hot wheels car and doesn't pass a melt test. They go by a few other names as well, bryco, jennings, davis.....etc.