Discussion Starter · #1 ·
Just curious, has anyone else seen marking like this inside their XCR?
105.8 KB Views: 366
bkeeper: that is indeed what it is. I found that there were a couple small 'divot' marks on the corresponding surface on the bolt carrier which seem to be causing the marking on the guide-rail.Looks more like wear from your bolt carrier sliding back and forth over the guide rails. If so, it is normal. My XCR and others I have seen have this wear.