Can't overlube a metal gun.
I usually get my steel and alloy Sigs as wet as my 1911s. I use Slip 2000 EWL and get it into the hammer and trigger--places rust can hide.
I also put lube all over the barrel, even if there's no bushing, it still cycles more smoothly.
The TWP-25 crap that comes with most Sigs is garbage. It stays where you put it and is a crud magnet. It also gets extra thick when it's at or below freezing outside.
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