I see where there are different bolt carrier groups, made from different types of metal. The more expensive the faster, not prone to heat, the better. I ordered some Molybdenum disulfide for some of my rifle barrels. Makes them slicker doesn't react to heat, doesn't mess with the rifling, makes it easier to clean. The bullet shmuts won't stick. Tell me if I were to apply this to my bolt carrier group will it make a differance? Colt LE 6920