Old gun catalogs
Inexpensive; 20-50 usd
fireing pin
Impossible to answer without knowing who made it, what it is (rifle, handgun, shotgun), condition, caliber/gauge, barrel length, etc..
You will have to provide more information. For instance, is it a shotgun, rifle or handgun? What caliber/gauge? Finish? Barrel length? Any accessories? Overall condition?
Try the library, blue book of gun values, gun shop, gun show, want ad.
No way to answer without more info- like WHAT handgun?
You will need to provide more info on the handgun in question.Please include the model number if possible,the caliber,and barrel length. Also is this firearm a solid frame revolver or a top break action revolver.
You will need to include the model number to get what ever info we can find,also the caliber or gauge.
See the Blue Book of Gun Values
Blue Book of Gun Values, Standard Catalog of Firearms
Better to contact Browning at browning.com