I was at the range earlier today firing some Blazer .40 cal ammo and I noticed that my Sig p239 does NOT like this particular ammo. I had a jam once every reload at least. Just to make sure it's the ammo and not my gun I bought some PMC .40's and fired.... Fired like a dream.

Anyways, I get home from the range and sit down to clean my Sig P239 and noticed this:

Here is probably the best one I can give: http://farm4.static.flickr.com/3661/...e298ee.jpg?v=0

And the one on the front of the slide: http://farm4.static.flickr.com/3463/...62e315.jpg?v=0

Overall picture: http://farm4.static.flickr.com/3423/...1d50b8.jpg?v=0

That's a pic of my P239 grip assembly. You will see where somehow the black coating was ripped away. The gun still fires ok, I'm just wondering is this something I should be concerned about? Is there a way to repair it? Do I even need to repair it?