RE: I've bought my last cleaning solvent
I've been using it since the fall. It works awesome! I believe its made by MPro-7 for Hoppe's.
I've found it gets stuff out that other cleaners couldn't. Somehow it get under or into the carbon. Its fast and doesn't smell. It will remove light copper by freeing up the carbon around it but a copper remover will always work better. As for rust? I can't say, but they do recommend its use as a cleaner on the outside of the barrel also.
I'm sold on it.
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