[turkeestalker]

Oh!
To answer your question Mr. Willikers...

No, the original Winchester parts do not fit, but are amazingly close.

I believe that the Norinco is in fact an actual copy of the Winchester, unlike another Chinese manufactured offering out there.
I don't recall which it is, maybe PAI?
But it is definitely different as the carrier does not have the slot cut in it for the action slide lock.
(that is the slot where mine had a hairline crack)

Where the Norinco offering differs is in the Metric vs. SAE threads on the screws and pin sizes etc.

There are some small dimensional differences in some of the parts, but they're large enough that they typically can not be interchanged.

One other thing to note is that the early model Winchester used screws through the sides of the receiver to hold the cartridge stops in place and the stops were hinged.

The later models used very tiny set type screws through the bottom of the receiver that the then non-hinged stops pivot on.

The Norinco design is like the later Winchester.