I bought a set of OEM CF mirror caps from a forum member and they looked good but I liked the M4 style on eBay that was initially posted on the first page of this thread. They arrived and the inside of the winglet when I guess it was dipped bothered me like others here had mentioned. So I ordered the set that Thaibrun bought and fitted them today. For $20 more they are way better quality, heavy fit well and the shape and finish of the little winglet is much better than the cheaper $40 set. For those wanting M4 style I would recommend these:
https://www.ebay.com/itm/Real-Carbon...72.m2749.l2649
I now have an OEM CF set for sale for $300 if anyone is interested and the $40 eBay ones if anyone wants to try them for say half off plus postage.
I'm on an alpine white F10 and really dig the M4 style caps in CF.