M60 Machine Gun

The M60 Machine Gun is a truly fearsome weapon. A 7.62mm belt-fed machine of death, it was used in the last quarter of the 20th century on Earth.

When the Avatar confronted the evil Raxachk in the Dream Realm in Martian Dreams, the villain had shielded himself from harm with a crystal barrier. He gloated that thanks to his psychometric powers he knew of all the weapons mankind was able to create, after analyzing all objects of the expeditions. His barrier was specifically made to protect against exactly these weapons.

However, he didn't know that the Avatar came from 100 years in the future, and therefore knew of much more powerful weapons. So the Avatar used Dreamstuff to create a M60 Machine Gun and with it easily penetrated the barrier, shooting Raxachk to pieces.

Trivia

 * The M60 has unlimited ammo.