8
Short barreled butt hole blasting machine. Fires the extremely deadly 5.56mm round. Kills motherfuckers dead
"we drove by and hit his ass with the twin m4's, dropped 4 mags into his house and the bitch just strait blew the fuck up, it was crazy shit"
by matt June 20, 2003
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9
Lighter virtion of the m-16
by prat October 02, 2003
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10
achieves over 75% commenality with M16A2... but shorter range
by Dean August 04, 2003
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11
One of the worst guns ever used.
Dude1:Look at my m4 it rocks!
Dude2:my ak is better.
Dude1: no its not : <--- sad cause he knows its true.
by The Dude92 May 12, 2009
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12
The M-4 is a version of the M-16 machine gun with a 16" heavy barrel which has a special machined groove which is used inconjunction with the bayonet lug, to allow attachment of other devices. The most commonly attached device is a grenade launcher.
This groove is midway between the front sight and the flash-hider on the end of the barrel.
by Anonymous October 21, 2003
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13
An extremely powerful assault rifle used by special forces and the U.S. military; it uses the 5.56 mm round. An M203 (grenade launcher) can be attached under its short barrel to cause maximum damage and doom. It is black with pink polka-dots and a lot of naked lumberjacks use them. Lumberjack slams are also delicious. They are eggs, ham, bacon, sausage, pancakes, and parsley. They taste slammingly tasty.
That stupid asshole was running down the hill when he tripped on a rock and the M4 Assualt Rifle he was carrying went off and shot a mailman.
by Borg November 27, 2004
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14
New kids at the school, first years, naive young student that U4s and above may laugh at and bully for their entire first year before they are accepted into the college.

Bottom of the school heirachy, annoying M4s should be bullied in boys case and bitched about in girls houses, until they are properly behaved.

Sucking up to/ making friends with M4s is forbidden in their first weeks at school.
Wow the M4s this year are arrogant, as always.
by EpsomBanter August 29, 2010
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