This is a discussion on Need Advice -- Bluing Or Ss For Ccw Gun within the Defensive Carry Guns forums, part of the Defensive Carry Discussions category; LE gets blued/park finishes because they are cheap , not for "concealment" or finish durability. FWIW, I have never found myself gliding from shadow to ...
LE gets blued/park finishes because they are cheap, not for "concealment" or finish durability. FWIW, I have never found myself gliding from shadow to shadow, attempting to close with my opponent head-on...only to be given away by my chromed slide!
Chrome is hardest, and most durable.
Polymer (NP3/PTFE or similar, possibly over nickle or park are second, but somewhat higher in corrosion protection)
Depends on you, as well. Some folks have more acidic/basic sweat, which can be a real corrosion problem.
Hard chromium plating is chrome plating that has been applied as a fairly heavy coating (usually measured in thousandths of an inch) for wear resistance, lubricity, oil retention, and other 'wear' purposes. Some examples would be hydraulic cylinder rods, rollers, piston rings, mold surfaces, thread guides, gun bores, etc. 'Hard chrome' is not really harder than other chrome plating, it is called hard chromium because it is thick enough that a hardness measurement can be performed on it and the chrome hardness can be measured, whereas thinner plating will break like an eggshell if a hardness test is conducted, so its hardness can't really be measured directly.
From what I can gather, bluing will have the shortest lifetime in a harsh environment, and hard chrome one of the longest, with the polymer coatings like GunKote and Duracoat somewhere in between. I do not know where NP3 falls in this range.
I would go with chrome.
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