Does one need to apply oil or ballistol INSIDE the lock?

[CS]

Hi all,
I came to realize (been a year roughly since I started getting into this hobby!) that I need to take better care of my flintlocks. Was wondering - do folks typically worry about rust INSIDE the lock, and if so, do they do the same thing as exterior i.e. apply ballistol or oil?

And does one have to dissassemble the lock and apply to every piece (tumbler, springs, screws, sears, bridles, everything) , or just broadly apply the ballistol on the entire lock inside and out?

Thanks in advance, guys (and happy thanksgiving)!

 

[stubshaft]

I usually clean my locks in a pot of hot water with ballistol. After cleaning I'll dry it off in the oven set on low which leaves a fine film of ballistol coating all of the parts,