M6D

The specific name of the model of sidearm used by the UNSC.

Pvt. Valdez pumped a full clip into the Grunt with his M6D.

by Militant Liberal April 5, 2005

M6D

The M6D Assault Pistol is a recoil-operated, magazine-fed handgun. It is issued with a smart-linked scope capable of 2X magnification. It fires 12.7mm semi-armor-piercing, high-explosive rounds. It can shoot either semi-automatic or automatic fire.

Pvt. Valdez pumped a full clip into the helpless Grunt.

by Militant Liberal April 16, 2005

M6D

Some fake ass gun in Halo.

I googled M6D and all I found was weak ass gamer sites.

by bt42 January 8, 2009

m6ddy

steroid abuser

tom: damn, i bet that bouncer thinks he's a right hard man but he's just a bully.
dick: he was a nobody before he became an m6ddy.
harry: he still is a nobody.

by janine_69 August 26, 2010