Leather (pocket holster), Kydex (IWB). I knew AZ was hot but I always heard that ya'll had a dry heat. I know the humidity is what tears us up. I took my mag release out today and see where it is lightly pitted from the rust so I may just buy a new one and send it to that place in PA mentioned by Catshooter and have it chromed.
Save the Constitution in 2012
someof those speciality shops can black chrome also. I think apwcogan.com can do that stuff.
. My PM9 has over 40,000+ rounds through it, and runs much better than an illegal trying to get across our border
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MAY GOD BLESS MUGGSY
I've never had a leather holster that I didn't sweat through, just FYI.
Cat
A couple thoughts: You could also look at a tennifer type finish for the new button. Pretty rust resistant and might look original, if you care. You could also look into getting Birdsong Black T applied to the new button. It is quite durable.
If sweat is causing your problems, rather than just the humidity, consider switching to horsehide or kydex holster. Cowhide absorbs much more moisture and will carry that over to the gun.