Aside from the obvious differences, such as the collapsible buttstock and shorter barrel (14.5 inches vs. 20 inches), there are some more subtle ones. The M4 has a higher Front Sight Base to compensate for the shorter sight distance, the M4 uses a different buffer and buffer spring than the M16, the M4 has an indentation in the barrel to accommodate the M203 grenade launcher mount developed for the M4 (government law enforcement M4s typically have a barrel without this indentation), and the M4 has a longer set of feed ramps which also extend into the lower receiver itself.
The M16 assault rifle has a greater range than the M4 carbine as a result of its 20-inch barrel, compared with 14.5 for the M4. The M16 can hit an area target out to 800 meters while the M4 is effective to 600 meters.
If you mean the US Army, the M16 and the M4 variant of the M16.
currently, they issue the M16-A2 service rifle
For now, the M16 is supplemented by the M4 carbine version, but there is no replacement named as yet.
The M4 is a shorter version of the M16 rifle, which is the military designation of the Armalite Rifle. Eugene Stoner is generally credited with the creation of the Armalite.
The M4 is the carbine version of the M16 (carbine means short barreled rifle). Search Wikipedia for M16 for more reading.
The M4 is an assault rifle based off it's popular cousins the M16 and AR 15 also assault rifles.
the top 3 rifles in the american military are the M4, the M16 and the M14
visually inspect rifle and make sure its in safe mode
visually inspect rifle and make sure its in safe mode
The M4 CARBINE IS BETTER THAN THE M16.
The basis of the M4 is the M16 rifle, for which Eugene Stoner is commonly credited. Development of the M4 was a cooperative effort between the Special Operations Community of the United States Armed Forces and Colt's Firearms.