Davenport/Enders Royal - Where to buy parts/stocks?

[Jericho]

I'm wondering if anyone knows where I can buy parts and forearm for an sxs Enders Royal 12ga.

Also wondering if anyone knows where I can buy a stock/forearm for a Davenport single shot break open 12ga. Both are really old shotguns.

 

[Jericho]

If anyone knows anything that may help at all, a PM would be great!