Check Bluebook "Standard Catalog of Firearms 2008 or 2009" to find values or mfg date
On line auctions, gun shops, gun shows, pawn shops want ad, for sale ad.
Try this link http://www.browning.com/customerservice/dategun/index.asp
Want ad, gun shop, gun show, on line auction sites.
Old catalogs and gun books would be the best place to find them
Internet auctions, garage sale, gun shop, gun show, want ad
Gun shop, gun show, want ad, pawn shop, internet auctions, egunparts
gun show, gun shop
It depends on what you want to find out.
If you have questions about you gun it is best to let a licensed gunsmith or firearms dealer look at your gun to see if he knows about it. The most important thing you can do though is to find out what brand it is, without that information it is next to impossible to find out about your gun.
Check Bluebook "Standard Catalog of Firearms 2008 or 2009" to find values or mfg date
Try e-gunparts.com, gun shops, gun shows, want ads for the grips. 25-80 USD
I would try the internet, gun shops, gun shows, want ads.