5.56mm by 45mm long. This is similar to, but not the same as .223
The M16 is an assault rifle that is a .223 caliber / 5.56 mm. like any weapon it is only as accurate as its shooter, <><><> It can be very accurate.
ww1 french mle m16 was 8mmx50mm lebel.
5.56,hope i helped,by the way my favourite rifle is the m16a2
At that time m16's had just come out and almost everyone had that.(caliber: .223 or 5.56 NATO)
Noop. an M16 fires a 5.56mm (or .223 caliber) bullet. A .45 caliber shoots a bullet that is ~11.43mm.
.223
The M4A1 carbine is chambered for the 5.56x45mm NATOcartridge, the same as the assault rifle it was derived from, the M16. It is also capable of firing the .223 Remington sporting cartridge.
5.56x45.223 or 5.56
the m16 uses 5.56 caliber ammo
The M16 assault rifle is chambered for the 5.56x45mm NATOintermediate rifle cartridge. It can also accept .223 Remington rounds.
The 6.8 mm SPC is a new cartridge being considered by the US military. About the same length as the current 5.56 cartridge used in the M16 rifle, it has a fatter bullet- about .277 caliber.
Nobody. The M16 is not a sniper rifle, and it did not enter production until 1960.