It also means that the company must do additional testing on their parts such as mag particle inspecting the bolt and barrel looking for flaws in the metals to reduce the chances of failure. It isn't just a sizing thing but that is part of it.
Yes you can buy a mil-spec rifle and have problems but you are far less likely to have problems than if you but a rifle for under $1000 that hasn't been tested to the same standards.
Yeah and most good companies exceed mil-spec standards with barrels and bolts. It sets a standard, a lot of companies surpass those standards. So like I said, mil-spec doesn't mean quality.


















































