Copper is a common knife in Murder Mystery 2 (MM2). Featured in the active in-game lineup. An accessible pick for newcomers looking to build a starter kit. Copper is a knife cosmetic used by the murderer role in-game. Obtained from: Mystery Box 1. Community trade value: around x1 T1 Common Weapons. Notably: There was a knife named "Copper" in the MLG box. This "Copper" was then named to "Brown" and was moved to the Rainbow Box. It is now no longer obtainable from the Rainbow Box