Thread: 1939 s/42 ????
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Unread 02-12-2009, 02:03 PM   #9
John Sabato
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I don't know for sure if the metal of these two parts is different from the rest of the gun, but they are definitely heat treated differently since they are both "springs".

I think the surface hardness of these spring parts is what causes them to "take" the blue solution differently than the rest of the pistol.
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