Own 2, they are great - KAK Industry Bolt Carrier Group

I bought a 9310 bcg for a new frt build and than a c158 bcg since I was so impressed with the quality.. It's great they have both offerings! The fit and finish is great. I have a rifle with a solgw 158 and one with a toolcraft dlc 158, I even have a Anderson bcg in a rifle going strong.... These are my new go to. I bought the second one in c158 to have on hand or for the next build. Don't sleep on these. A really solid product I've been putting to pace with a partisan disruptor forced reset trigger.