Can anyone provide bolts like 6,5 Grendel, 6.8 Spc II, 458 Socom, and 762x39 so that we can start building some hunting uppers ans comp uppers etc. Perhaps maybe a matching barrel to go with. I've been trying to find a 6.8 spc II or 6.5 Grendel bolt for a wk180c type rifle for months with no luck.