Jeffvn:
You forget something, that's the performance of the rifle out-of-box, direct from the store, no customization, and durable enough for military field use and using standard ammo. My issued rifle is a modified AI design, and the smallest group I've shot is 0.3MOA, prone on the ground, no mat or anything, and bipod.
I could also custom-order a rifle, based on an AI stock, have it assembled by a builder, and get it to shoot .25MOA, if I'm willing to wait long enough, but it's not guaranteed that it will be as durable as the issued rifle I have, especially not in arctic conditions.