That is true, anyone can. But in the process of my selection of a Del-Ton upper it doesn't seem like they have a reputation for total crap. And on top of that if they are willing to mark bolts accordingly I am prepared to take them at face value. But if the bolt dies an early death, I'll be using a more reputable manufacturer.
So, I am pleased so far with my purchase. And I am impressed with the little details that other manufacturers don't care for. I just will have to see how it shoots and how long the parts last. But I will give them the benefit of the doubt on a plinker build.

