Where do you get parts for a J C Higgins model 126.2830 pellet rifle?

I know for certain that this air rifle was made by Crosman air gun co. And I think it is a Crosman model 180 made for Sears. If I am right It's a single shot .22 caliber C02 rifle with a wood stock and long barrel.

Crosman offers a free service to locate shops that repair Old Crosman products. See the link below.