M16 rifle

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Rifle, 5.56 mm, M16
M16a1m16a2m4m16a45wi.jpg
From top to bottom: M16A1, M16A2, M4A1, M16A4
Type Assault rifle
Place of origin United States
Service history
In service 1962–present
Used by See Users
Wars Vietnam War
Laotian Civil War
Cambodian Civil War
Cambodian–Vietnamese War
1982 Lebanon War
Invasion of Grenada
Invasion of Panama
Gulf War
Somali Civil War
Operation Deny Flight
Operation Joint Endeavor
War in Afghanistan
Iraq War
other conflicts
Production history
Designer Eugene Stoner and L. James Sullivan[1]
Designed 1956[2]
Manufacturer * Colt Defense
Produced 1959–present[2]
Number built ~8 million
Variants See Variants
Specifications (M16)
Weight 7.18 lb (3.26 kg) (unloaded)
8.79 lb (4.0 kg) (loaded)
Length 39.5 in (1,000 mm)
Barrel length 20 in (508 mm)

Cartridge 5.56×45mm NATO
Action Gas-operated, rotating bolt (direct impingement)
Rate of fire 12–15 rounds/min sustained
45–60 rounds/min semi-automatic
700–950 rounds/min cyclic
Muzzle velocity 3,110 ft/s (948 m/s)[3]
Effective range 550 meters (point target)
800 meters (area target)[4]
Feed system 20-round box magazine:
(0.211 lb [95 grams] empty / 0.738 lb [335 g] full)
30-round box magazine:
(0.257 lb [117 g] empty / 1.06 lb [483 g] full)
Beta C-Mag 100-round double-lobed drum:
(2.2 lb [1 kg] empty / 4.81 lb [2.19 kg] full)

The M16 is an assault rifle used by the United States since the Vietnam War in 1963,[5] based on the AR-15. Since 1975, the M16 has been used by many different countries. First designed by Eugene Stoner in the United States of America, it is currently the standard infantry rifle used by the United States Military Forces. The rifle is being used by over 80 nations.

The M16 uses the 5.56mm NATO (.223) caliber cartridge, with a muzzle velocity (the speed of bullet leaving the rifle) of over 900 meters per second (over 3,000 feet per second), and has a maximum effective range (the maximum distance that the bullet is deadly) of 550 meters,[6] with a rate of fire (how fast the gun shoots) of approximately 800 rounds per minute. The M16A1 can shoot fully automatic and semi automatic; other versions have three-round-burst fire and semi-automatic, and the M4A1 Carbine retains full automatic and semi automatic fire. The M16 normally holds 30 bullets in its magazine, but there are variants of the magazine that hold only 20 bullets.

There is also an M16 variant for the Canadian Army called Diemaco C-7. The Diemaco C-7 rifles have maple leaves on the left side.

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