I have a 27-2 with beautiful case hardened colours on the trigger and hammer. I left her in the safe after shooting for a couple of weeks...I thought I had cleaned her up thoroughly but when I took her out for a run today I noticed light surface rust on the side and front of the trigger and some on the checkering on the hammer.
Could anyone please tell me how can i clean this off (and keep it off) without damaging the colour case hardening???
I'd try some Kroil with a brass bristled brush. You cannot get very aggressive without risking washing out or removing the case colors. When you have the parts cleaned up I would apply some Birchwood Casey "Sheath" for protection.
Cleaning light rust off case hardening
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