M21E

"A modified G3 which serves as the top model amongst MGs. It has high accuracy and an upgraded firing mechanism to allow burst fire, which is unique for a MG."

- Item Description

The M21E is a machine gun version of the standard G3 rifle added in the 7-1-2010 update, it features twin drum magazines

Trivia

 * This is currently the only machine gun to have a burst fire mode
 * This is the second machine gun to not have a bipod set out. The M60 is the first.
 * This gun appears to be made up by Nexon.