Just got 2 new MK16's (13.5") in and went to use them on a build and noticed something odd.
Check out the pictures, what is going on here? Are these mini stress/heat cracks or something? I certainly don't think they're machining marks given the sporadic spidering going on.
I also noticed that the anodizing on the affected rail is not smooth and has a kind of diamond-like glitter sparkle to it (that part doesn't bother me in the least, just making note). None of my other MK16's or other DDC G rails have this for that matter. I have also included a picture of my 10.5 MK16 as a comparison. Pics show both ends of the rail, but the barrel nut section shows the most severe case of this.
Obviously I'm concerned about structural integrity since none of my other rails have this going on.
Affected 13.5 MK16 Received the other day:
10.5 MK16 received several months ago (nice and smooth):