I don't see why they wouldn't I can get armor piercing ammo for an AR, what's the difference? I can look at an FN catalog they have about 5 ammo variants none specifically say armor piercing( which I don't think the catalog is hiding anything it has the m-249 to the FN M3M .50 cal MG in it) but that is because the round has armor piercing abilities in its design, its just the nature of the round it's nothing extra.