'''4.73x33mm Caseless''' is a type of [[ammunition]] for firearms. It is considered to be a <span style="color:#AA0000">'''(R)'''</span>ifle caliber, although a very special one.
This cartridge was originally designed for the ambitious Heckler & Koch G11 rifle, of which the latest iteration, the [[Heckler & Koch G11K2|G11K2]], is available in the Mazes. Although ammuniton ammunition in this caliber is regularly produced, it requires specialized, dedicated machinery and is therefore relatively rare, as new batches are produced only on an occasional basis.
4.73x33mm is pronounced ''four point seventy-three by thirty-three millimeters''.