MK2 may refer to: Mark II (disambiguation), a second version of a product, frequently military hardware. "Mark", meaning "model" or "variant"
==Military== Mk 2 grenade, a hand grenade used by the United States military starting in World War II Marte Mk2, a radar-guided helicopter and ship-launched short/medium-range anti-ship missile weapon system developed by Oto Melara and used by the Italian Navy
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).