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.
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
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.
by Final Cut October 22, 2005