The M4 uses which caliber as described?

The M4 uses which caliber as described?

• A. 9mm
• B. 7.62mm
• C. .50 BMG
• D. 5.56mm

Answer: (D)

The M4 is chambered for a 5.56×45 mm NATO cartridge. This lightweight, intermediate rifle round balances recoil, magazine capacity, and velocity, making the weapon controllable in automatic fire while allowing soldiers to carry more rounds. The other calibers are not standard for the M4: 9mm is a pistol/submachine gun round, 7.62mm is a larger full‑power rifle round used in different platforms, and .50 BMG is a heavy anti‑material round.

The M4 is chambered for a 5.56×45 mm NATO cartridge. This lightweight, intermediate rifle round balances recoil, magazine capacity, and velocity, making the weapon controllable in automatic fire while allowing soldiers to carry more rounds. The other calibers are not standard for the M4: 9mm is a pistol/submachine gun round, 7.62mm is a larger full‑power rifle round used in different platforms, and .50 BMG is a heavy anti‑material round.