Where can you find a parts breakdown for a Springfield Mdl 187J 22 cal rifle 22 HS sl lr?

You can find a parts breakdown for the Springfield Model 187J .22 caliber rifle by checking the manufacturer's website, if available, or by consulting firearms parts suppliers that specialize in vintage rifles. Additionally, online forums and communities dedicated to firearms, as well as auction sites like GunBroker or ArmsList, often have listings with parts diagrams. Lastly, you might find useful resources in the form of service manuals or schematics available through libraries or specialized books on firearms.