So I picked up a used 527 in 223 and while I was doing my normal clean for any gun I pick up I noticed something on the bolt face that looks a little funny will try to include a picture I can just barely get a needle to catch on from the best I can see it is only on the face. And the picture makes it looks smother then it is it has a little more of a zig zag to it.
![Automotive lighting Tints and shades Auto part Automotive design Helmet]()
