So i am in the process of building an AR upper and I have some questions on barrel break in. I have heard mixed things about this process. Some say that this process is just a scam and the people that say that this process is necessary are just saying it so you have to buy another barrel sooner.
heres a link to one expert that has this opinion:
How to Break-in a Barrel
and some suggest the one shot one clean method.
my AR isn't going to be used for extreme accuracy but I would like it to be as accurate as possible of course. let me know what you guys think of this topic.