Best solvent for removing carbon build up?

[Fuerte]

I have a Ruger SR 556 and I absolutely love it. However, the carbon build up on the gas regulator and piston is very hard to remove. I have tried M-Pro 7, Hoppe's 9, Montana Extreme Copper Killer, Blue Wonder Gun Gleaner, Break Free CLP, and even some spray-on brake cleaner. I used a good stainless steel brush and it is still too much work with any of them. What works for you?

[Fuerte]

Anyone?

[faawrenchbndr]

Go to your local Ford dealer's parts counter.
Ask for "Motorcraft Carburetor Tune-up Cleaner"

Apply this to the parts, remove and soak them if possible.
A few hours the product will disolve/loosen the carbon.
You can also dampen a patch and place on the part/piece to loosen the carbon

[Fuerte]

Thanks. I'll give that shot.

[jglenn]

Also a product out there called Carbon Kleen.


soak the part in it.

Brownells also has a new carbon soaking agent

[HCRoadie]

Soak in Gunzilla, then work it over with a dental pick