Try e-gunparts.com
Garner Auctioneers lists a Richland model 825 O/u 12 gauge s/n 11252 sold for $825
A model 80 WHAT? Mossberg made rifles, shotguns, and pistols. If a local gun shop does not have the part you need, you may find it at gunpartscorp.com.
Depends on the model.
usually between $350 to $450.
@100 USD depending on condition
Exploded Firearms Books (soft cover) Editions 1 & 2 both have parts diagrams for this rifle and many other rifles,shotguns and pistols.
the model was invented in the year 1911
The Richland Arms Company was based in Blissfield, Michigan from the 1960s to the mid 1980s. The company imported a range of Spanish and Italian shotguns and pistols. They are no longer in business. Value will depend on exact model and condition, but somewhere around $400 would be a starting point.
The Model 59 was made from 1971-1982
No published history
what model pistol ????
It depends on the model but usually they are considered medium in sound.