A door-breaching shotgun manufactured as a custom part by Knight's Armament Company. Can be mounted under the barrel on a M4 or M16 assault rifle, like a M203 grenade launcher.
The Masterkey project was initiated during the 1980s to provide assault rifles with a potent built-in door breaching tool.
by Kaiveran January 18, 2009
Get the Masterkey mug.The Masterkey is a combination weapon featuring an M4 attached to a Winchester 12 gauge shotgun. It is named Masterkey for its common use as a door remover.
Have a locked door? Not anymore.
by Detranova July 29, 2003
Get the Masterkey mug.Related Words
by themasterkey December 29, 2010
Get the master key mug.by Bagel June 1, 2004
Get the mastercry mug.To masterbeast is:
1) To play alone in a multiplayer game by yourself because your friends don't want to play with you.
or
2) To be a badass when the rest of your team is down and out.
1) To play alone in a multiplayer game by yourself because your friends don't want to play with you.
or
2) To be a badass when the rest of your team is down and out.
1) Yesterday I was masterbeasting because you guys didn't want to play with me.
2) Damn all you fools suck, I had to masterbeast for us to get through the last round.
2) Damn all you fools suck, I had to masterbeast for us to get through the last round.
by THE ON3 November 2, 2011
Get the Masterbeast mug.Masterdebater (noun) - Another name for really good debaters. Not to be confused with "masterbater," although since most debaters are weird, nerds, and freaks, many of them are also masterbaters.
Andrew: hey alec - i masterdebated for 2 hours last night!
Alec: wow, i masturbated with my rabbit for 4 hours last night!
Andrew: what the fuck?!
Alec: wow, i masturbated with my rabbit for 4 hours last night!
Andrew: what the fuck?!
by Wonster April 29, 2007
Get the masterdebate mug.by gsehtpseigsh July 3, 2005
Get the masterfece mug.