|10-19-2005, 12:25 PM||#1|
Join Date: Feb 2004
Heat (??) markings in Nitron Slides
I was looking at a couple of Stainless/Nitron'd 220 slides today and noticed there to be kind of rainbow coloration in the interior of the slide about .75-1 inch in front of the of the ejection port that went forward towards the muzzle. They went down both interior sides of the slide towards the rails in about a .25 wide strip. The rest of the coloration was on the inside top of the slide forward towards the front sight for about 2-3 inches. It was only on the interior, the exterior was normal, with no similar colors. The color was primarily like a magenta/light maroon in waves.
I've checked my regular P220 with blued slide as well as my regular plain stainless 220ST and there were no similar markings.
My question is are these markings normal on the inside of a Nitron slide? The colorations almost look like heat markings. I thought Nitron was a heat applied finish. The start of the markings would be right about the end of the brass if a round was in the chamber, so I might surmise this is probably one of the hotter areas during firing. As I say, it was on two separate samples, one with probably less than 25 rounds through it.
I don't own any SS/Nitron'd SIGs such as the 229, so I am kinda wondering if this is normal or perhaps the finish wasn't completely cured, some form of handling, or what not.
Any feedback would be appreciated.
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