Need recommendation for solvent for ultrasonic cleaner

[P7M13]

I have some gun parts that have pretty hard crust of carbon buildup on them. My thought was cleaning them in an ultrasonic tank in a liquid that specializes in carbon removal would be most effective. Does anyone have suggestions for the chem?
Thanks.

Edit to add: I would prefer to avoid flammable chemicals, and not need to put on 7 layers of PPE.

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[F2CMaDMaXX]

Yup, MPro7 cleaner is perfect for this.

 

[P7M13]

Yup, MPro7 cleaner is perfect for this.

Thanks. The Savage ejector pin gets stuck in its hole when too much carbon builds up.

 

[F2CMaDMaXX]

Don't forget you can pass it through a filter and re-use it.

 

[woody06]

We use Simple Green. Don't know how it will work on carbon build up but it does a great job cleaning eye glasses and jewelry.

 

[F2CMaDMaXX]

We use Simple Green. Don't know how it will work on carbon build up but it does a great job cleaning eye glasses and jewelry.

Yes, this works too.

MPro7 has an advantage of leaving a coating (nothing to clean off) that prevents flash rusting after cleaning.

 

[P7M13]

Don't forget you can pass it through a filter and re-use it.

Good to know. I do the same with lacquer thinner - let it sit for a few days, the junk separates out, and like taking fat out of gravy, I save >75% of it.

{ETA} My wife is lazy with paint brushes, and the fine art ones she often uses start at >$20 apiece. Really pisses me off, but I learned to keep my mouth shut years ago.
After she has abandoned them and they've dried out, full of crud, I soak them in lacquer thinner. It dissolves acrylic, latex and oil paints, and the brushes can be restored.

 

[woody06]

Yes, this works too.

MPro7 has an advantage of leaving a coating (nothing to clean off) that prevents flash rusting after cleaning.

Thanks for the info.