Roguard and NP3 is not applied to springs or bores. I have a Win 70 that has an NP3 coated bolt and internal parts with Roguard on the balance. It is basically rust proof (stainless barrel)now and has held up very well in the field. The NP3 coating is self lubricating, so no oil is needed on the working parts. On the whole, the coating combo along with a Kevlar stock makes a very weather resistant gun.

OB