The cheapest you will be able to find one is about $800-900 (every once and a great while you may find one cheaper). Most run about $1200-1600 with high end models running into the $5k-20K.
800 or so
800 or so
100-1500 USD
A semi-automatic M4 derivative can cost as low as $800 from ImpactGuns. But for a civilian to acquire a fully automatic, military grade M4, be ready to spend up to $3000.
The M4 carbine has a muzzle velocity of 2,970fps(884m/s).
MY Brand New Stag Arms M-4 Model #1 Cost me $850.00. I love it!
With a loaded 30-round STANAG magazine, the M4 carbine weighs 3.1 kilograms (6.9 pounds).
You can buy a plastic m4 or you can buy a metal m4
they are bothe very similar but i would have to say the m4 because of higher power and it is used by the military not like the ar-15 which is mostly used by law enforcement. It depends on the m4 though because there is a very wide variation of models of the m4 unlike the ar-15 which is one basic model... there isn't much difference between the m4 carbine and the ar-15
The selector lever. That's pretty much it.
m4 <><><> You would have to define better. The M4 has a greater range, the AK a heavier bullet, the M4 a faster bullet, you can carry more ammo for an M4, the AK needs less maintenance, the M4 has a higher rate of fire- and so on.
The Colt M4 Carbine .22 is a replica of the real M4 but in .22 caliber.