Depending on which parts, they may need to be made.
Where can you find parts for your Charles daily shotgun
look on the breach, barrel.
You might find what you need at webdept@gunpartscorp.com .
good luck on that mission you will need a time machine for sure !!!!! I have one in working condition. I am looking to get rid of it. Email Me
http://www.e-gunparts.com
Modle 101 1380 410 shotgun
Go to gunparts.com "Numrich" they have new & used parts
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This shotgun was probably made by Crescent, so your local gunsmith can probably find one in his parts pile. Or, if there are no missing pieces, he can repair yours.
It's a pretty common gun, so any gunsmith should have a source for parts.
You might try e-gunparts.com