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A rifle, of the general configuration of the Colt M4(tm), that is not actually made by Colt.

An M4 is generally considered to be of the M16 family and having the following features: A short gas system, a barrel weighted in front of the front sight post with a cut out to facilitate the mounting of an M203 grenade launcher, an adjustable stock and feed ramps that extend from the barrel extension into the upper receiver.
"That kool-aid drinking homo said my rifle is not an M4 because my feed ramps were not carved by Samuel Colt himself"
by eodinert May 22, 2005
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Aug 7 Word of the Day
A celebrity free pass is an agreement between you and your significant other that if you meet said celebrity and there is an opportunity to sleep with them, your partner cannot get mad at you for doing so because you had agreed before hand that this person was your celebrity free pass. It is ideal if both of you in the relationship choose a celebrity free pass so that the playing field is even.
Julia met Drake at a bar, and hooked up with him, knowing that her significant other could not be mad at her, because Drake was her celebrity free pass.
by gingerale011 March 25, 2011
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A civilian AR-15 rifle that has been configured as the military M-4 carbine with 14.5" barrel, flash supressor to bring barrel length to 16", and collapsable stock.
This M4gery tucks better than my AK.
by Final Cut October 22, 2005
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