Which BCG would you pick?

[GOST]

Instead of starting a new thread, can you coat a mil spec phosphate BCG like the BCM? I know they use to offer the ionbond and I let someone talk it outta mine.

Could I send one to be QPQ'd or other treatment? Would this mess with the original heat treatment?

I've heard of people getting a BCM NiB coated. I wouldn't though, would be afraid of the tolerances being thrown off.