Best bcg you can get - Lantac Enhanced Full Auto Style Bolt Carrier Group (BCG) w/ NiB Coating

Spending any more than this has diminished returns. This is the best BCG on the market. I’m not a scientist or anything but I have put almost 1900 rounds of 308 through this thing and it’s like it’s coated in hot butter or something. Even if you don’t clean for months the carbon on this wipes clean off like a freshly waxed car. There are almost no discernible wear marks on it. It’s like the thing is coated in diamond or something it’s incredible. I have replaced all my ar10s with this bcg and have replaced two of my Daniel defenses with their 556 version. You will not be disappointed at all.