Check the yellow pages for gunsmiths or go to a local gunshow. Be prepared to spend about twice the value of the repaired gun. Numrich Arms @ www.e-gunparts.com
50-100 USD
The 12 Gauge Single Shot Shotgun Model 336882 from the Volunteer Arms Company was probably manufactured by the Belknap Hardware and Manufacturing Company that operated in Louisville, Kentucky. Iver Johnson Company and H & R, are two other gun manufacturers that made this type of shotgun.
About $100
numrich gunparts.com has everything but the stock
Crescent or HD Folsom
go to your local firearm dealer he should know
Your single shot 12 gauge shotgun was made by the Crescent Firearms Co.This company was in business from 1888-1931.Your single shot is valued at between 50-85 dollars,depending on overall condition.
50-150 USD
numrich
http://www.e-gunparts.com
Not a thing
Pretty much an impossible undertaking.