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What is the caliber of the M16A4 / M4 Carbine?

1) 5.56x45 mm NATO
2) 7.62x39 mm
3) 9 mm
4) 12 gauge

User Pyroscope
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1 Answer

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Final answer:

The caliber of the M16A4 / M4 Carbine is 5.56x45 mm NATO.

Step-by-step explanation:

The caliber of the M16A4 / M4 Carbine is 5.56x45 mm NATO, which means that the bullet diameter is 5.56 mm, and the cartridge has a length of 45 mm. Caliber refers to the diameter of the bullet or the inside diameter of the barrel. The M16A4 / M4 Carbine is chambered for the 5.56x45 mm NATO caliber ammunition, which is commonly used by the military.

User Bas Swinckels
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