This too will get struck down. Its irritating and infuriating but it will not last.
Why would this be struck down? AP ammo has been banned for a long time. Other bullets have been caught up in the ban for the same reasons. Like the ‘86 machine gun ban, it still stands because most legislators and judges see it as too militaristic for reasonable civilian use, with plenty of close enough alternatives still available. M855 is fine until “shall not be infringed” resumes.