While the M4 Carbine is intended to fire a 5.56x45mm NATO round that is distinct from the .223 Remington, both are centerfire cartridges. So yes, the M4 Carbine is a centerfire rifle.
700-950 a minute
yes
Gas operated, magazine fed, select fire, 5.56 carbine.
45 RPM
They are not the same. The M4A1 was first issued to U.S troops in 1997. It is more reliable than the M4 and has a fully automatic fire capability.
The M4 CARBINE IS BETTER THAN THE M16.
The TRUE M4 carbine is a select fire weapon, and is not available for sale to private persons. The M-16 is also select fire, but some were registered with the BATF prior to the May 1986 cutoff date, and CAN be transferred. The M4 was made AFTER the cutoff date for a private citizen to register one.
The M4 is a military rifle capable of semi automatic or 3 shot automatic fire. It is used where a lighter shorter rifle is useful.
No one will give you an M4 rifle/carbine for free.
M4 is the carbine- shorter barrel
The Colt M4 Carbine .22 is a replica of the real M4 but in .22 caliber.