You pull the trigger. The hammer strikes the primer. The primer ignites the powder. The ignition of the powder creates rapidly expanded gases which separate the projectile from the cartridge. These gases follow the projectile through the barrel. When these gases reach the opening, they travel up the gas tube and put pressure against the bolt carrier. The bolt carrier is pushed back. As this happens, the extractor grabs the spent casing, and it is pulled out as the bolt carrier is forced back and ejected. The bolt carrier travels to the rear of the rifle, into the extension tube. Its movement is stopped by the buffer. At that point, the return spring - which was pushed on and made tense by the travel of the bolt carrier) pushes forward, returning the bolt carrier to its original position. As the bolt carrier travels forward, it catches the rim of the next cartridge, and pushes it into the chamber. The bolt face enters the chamber behind the cartridge and rotates until it locks into the chamber as the bolt carrier is pushed forward.
The M4 is an assault rifle based off it's popular cousins the M16 and AR 15 also assault rifles.
The M4 carbine is chambered for the 5.56x45mm NATO cartridge. It will also accept .223 Remington rounds.
In the related links box below, I posted the information.
For now, the M16 is supplemented by the M4 carbine version, but there is no replacement named as yet.
Yes.
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.
MY Brand New Stag Arms M-4 Model #1 Cost me $850.00. I love it!
The M4 assault rifle has an overall length of approximately 33 inches (83.8 cm) with the stock fully extended, and its barrel length is about 14.5 inches (36.8 cm). It typically weighs around 6.36 pounds (2.88 kg) without any attachments or accessories.
14.5 inches on the actual M4 rifle.
The M4 is capable of automatic fire, the AR 15 is not
The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle. The M4 is a 5.56×45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine. It has a 14.5 in barrel and is 33 inches long.. It weighs 6.5 lbs.
No such weapon, so no. However, there there is a M16A4. It is possible, but, highly unlikely that an individual can buy one.