It is not measured in years, but in terms of rounds fired. Parts of the rifle are measured, and replaced as they wear out. A barrel, when properly cared for, may have a life cycle as high as 50,000 rounds.
20000
25,000 rounds
The M16 assault rifle is chambered for the 5.56x45mm NATOintermediate rifle cartridge. It can also accept .223 Remington rounds.
Nobody. The M16 is not a sniper rifle, and it did not enter production until 1960.
1959
The M16 sieries of rifles are individual combat weapons.
The Black Rifle by Blake Stevens
The weight of an M16 rifle without a magazine or sling is approximately 7.2 pounds.
@ 1960
uh well there completly different guns...the m16 is a assualt rifle and the l96 is a bolt action rifle. m16 is probly the better choice if your trying to survive on a battlefield.
If you mean the US Army, the M16 and the M4 variant of the M16.