Mold

Hydrogen peroxide will kill the mole spores . Spray and let it sit for 15 minutes . Test it on the wood and bluing first . I had to do that to most of my furniture that I had stored while my house was being built . Mold really likes leather and wood I found .

You can get fungicide at paint stores. Most of its very 'green' and I'd suspect gun friendly. YMMV.
FYI I'm in the coatings business.

Hydrogen peroxide kills just as good and is only cost about 75 cents for 32oz . It didn't damage anything that I used it on and that was a lot . I never used it on a gun though .

I don’t think that it will hurt anything in 15 minutes and then wiped of and oiled up . You will have to test anything that you use most likely .

Don't mix ammonia and bleach, the results are toxic. I'm not joking, don't do it.

jimboecv said:

Don't mix ammonia and bleach, the results are toxic.

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^^^^ Heed these words! When I was a young teen I had a next door neighbor that nearly died from the fumes.

Ammonia and bleach mixed produces chlorine gas...remember WW I?

On the other hand, the mixture works wonderfully on moles! Just be quick.

MI2600 said:

Ammonia and bleach mixed produces chlorine gas...remember WW I?

On the other hand, the mixture works wonderfully on moles! Just be quick.

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That's no joke!

Years ago I had a rat that got into my garage and ruined a bunch of stuff (It ruined all of the boxes from my early gun purchases, including the blue boxes from my 2 Model 19's) I pulled up the bottom shelf of a built-in cabinet and found where the creature nested. It had left puddles of dried urine on the concrete under the shelf. Not thinking, I got down on my knees with a scrub brush and poured straight bleach onto the dried puddles to clean them. The residual ammonia/chlorine bleach mix bubbled up and literally sucked the air from my lungs. I fell back and crawled out of there before I collapsed outside, nearly unable to breathe.

I now have great respect for anyone who has survived a gas attack, it's awful.

Stay safe.

MI2600 said:

remember WW I?

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Like it was yesterday! Oh, wait.....

Riomouse911 said:

The residual ammonia/chlorine bleach mix bubbled up and literally sucked the air from my lungs. I fell back and crawled out of there before I collapsed outside, nearly unable to breathe.

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And you likely have at least some permanent damage.

BBBBill said:

Like it was yesterday! Oh, wait..... View attachment 942312



And you likely have at least some permanent damage.

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Could be. It was no joke, that’s for sure.

Stay safe.

Back in the day when I was buying surplus 98 Mauser rifles only to get the actions, when these rifles arrived they were covered with what I would call a cosmoline type grease. I removed all the wood and soaked the barreled actions in a trough full of kerosene. That cleaned the cosmoline off real well and may just help with your dilemma. Didn't hurt the bluing, at least what was still there, one bit.
Here again, wear protective gloves and do the soaking in a ventilated area.

Don't use anything with vinegar in it. That's one of the best bluing removers out there. Toilet bowl cleaners will wipe the bluing away in a hurry too.
I would just try soapy water on the stocks and some Hoppes on the steel.