I'd keep it even if I doubted I'd shoot it because I think they are very cool. Makes a nice office or living room ornament. My little bro has one, and I wish I did.

If you're only keeping it because you really worry BP might be the only allowable, legal type of handgun in the future, sell it. A handgun ban ain't happening in our lifetimes. (And I'd bet for a considerable time thereafter.)