M855 vs. M995

I was looking for information on M855: I'd read that it has a steel core penetrator in the bullet, but it usually isn't called armor-piercing.  So I found a page that describes the difference between M855 and the AP round, M995.  It turns out that M855 has a SC, but it's not considered AP.  The AP round has a tungsten carbide core inside the jacket.  Bad-ass!