Lightning Gun
A Lightning Gun is King Arthur's name for Macbeth's standard weapon. Greg Weisman has yet to give it a more "technical" name.
Characteristics
A "Lightning Gun" is an electromagnetic weapon with two electrodes that generate the charge. Macbeth uses it as his standard weapon, as did Banquo and Fleance when they were still under Macbeth's employ. Griff also appropriated one when he fought Macbeth and his stooges.Xanatos's Macbeth Robot also used a "Lightning Gun", but he has not made use of the weapon elsewhere.