Need help understanding BCG mechanics
Ever since I bought my AR I've tried to learn as much about the platform as I can but I still have a few questions. Can someone explain to me the mechanics of the parts within the BCG? Once the gas enters the gas key what is actually going on internally. What is the purpose and relationship between the gas rings and bolt/carrier? What is the purpose of the bolt cam? Why is it bad if all the gaps in the gas rings line up? What is the divot in the right side of the BCG, exposed when the dust cover is open, for? Thanks