Yeah, my point was there is a lot more to it than most people think. MPI is not as high on my list as a couple other things....MPI is nothing more than a test to make sure there are no stress cracks, or voids in the metal under the surface.
It does nothing to check RC hardness.
With that said, MPI testing is a (just ONE) requirement of a bolt deemed suitable for US Military use by various contracts.
you think they will give me the time of day after all this time ?I'd give midwayusa a call and see if they'd replace it, or issue a refund. It's clearly not a lot of things.
Just my humble opinion.
The AR Stoner brand, especially their bolts got a really bad rep a couple years ago after Sandy Hook when all the AR parts were extremely hard to find. I remember seeing numerous posts from people with similar problems and also cracked/broken bolts. Definitely a problem with their heat treating.
yeah, I was one of those scrambling suckers that panic clicked
I already replaced the bolt a while ago, the issue now is the carrier, a few posts back. I already have another BCG inboundIt's worth a shot. It was a known issue to them so they might help you out. If not, just dump that one and pick up a new bolt. They're cheap and available everywhere now. The carrier should last a while longer but I would still look to replace it at some point.