Where can I get parts for a Winchester 1887 10 gauge shotgun?

You can find parts for a Winchester 1887 10 gauge shotgun at specialized gun shops, online retailers like Numrich Gun Parts, and auction sites such as GunBroker. Additionally, some firearm forums and collector groups may have members selling parts or can direct you to reliable sources. It's important to ensure that any parts purchased are compatible and in good condition for safe use.