The M4 carbine has a muzzle velocity of 2,970fps(884m/s).
It will go bang and exit the gun at the muzzle end.
1990 feet per second.
The M4 CARBINE IS BETTER THAN THE M16.
No one will give you an M4 rifle/carbine for free.
M4 is the carbine- shorter barrel
Muzzle Brakes reduce the felt recoil and barrel rise when firing a firearm. Flash Suppressors reduce the flash produced from firing a firearm.
The M4 carbine, as issued to military and government forces, do not have a compensator. It has a flash suppressor, which is typically of the A2 "birdcage" type common to the M16 rifle, although this may be replaced with a number of aftermarket models.
The Colt M4 Carbine .22 is a replica of the real M4 but in .22 caliber.
There is an M4 carbine in Call of Duty: Modern Warfare 2.
5.56mm
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.