What is up with H&K USP extractors turning a different color?

Bluedragon

Expert
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Apr 17, 2008
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Muncie
Put down some cash today for a lightly used H&K USP 45 V1 and noticed the extractor was turning a red purplish color. I was just wondering why HK's do that? Because I have seen many in the past which have had the same problem including some HK's being sold on here. It's not a big deal to me I was just curious. Also does anyone know of a good source for picking up some spare mags?
 

gunman41mag

Shooter
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3   0   0
Feb 1, 2011
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SOUTH of YOU
Put down some cash today for a lightly used H&K USP 45 V1 and noticed the extractor was turning a red purplish color. I was just wondering why HK's do that? Because I have seen many in the past which have had the same problem including some HK's being sold on here. It's not a big deal to me I was just curious. Also does anyone know of a good source for picking up some spare mags?

I buy my mags from CDNN;)
 

Terp7

Plinker
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0   0   0
Apr 6, 2011
15
1
Muncie
Sometimes the metal on HKs doesn't accept the color/bluing very well. It is purely a cosmetic issue and is not covered by the lifetime warranty.
 

Obiward

Plinker
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Oct 19, 2010
155
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Fortville
The Sportsmans Guide has 3 USP off brand mags for $60. I've been debating them, but haven't pulled the trigger on them yet.
 

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