Which of the following describes the 240B?

Which of the following describes the 240B?

• A. Air cooled, belt fed, blowback operated, crew served, fully automatic, fired from the open bolt position
• B. Water cooled, belt fed, gas operated, crew served, fully automatic, fired from the open bolt position
• C. Air cooled, belt fed, gas operated, crew served, fully automatic, fired from the open bolt position
• D. Air cooled, belt fed, gas operated, crew served, semi-automatic, fired from the open bolt position

Answer: (C)

The description you’re looking for is built from combining how the weapon is cooled, fed, operated, who uses it, and how it fires. The M240B fits all of these: it is air cooled, belt fed, gas operated, crew served, fully automatic, and fires from the open bolt position. Air cooling suits a weapon intended for sustained fire without the weight of water jackets. Belt feeding lets the gun run long belts for continuous fire, rather than swapping magazines. A gas-operated action uses gas tapped from each shot to cycle the bolt with a piston, which is more practical for a heavy machine gun than a blowback design. Being crew served means it’s designed for teams to operate and sustain fire. Fully automatic indicates continuous firing while the trigger is held and ammunition remains. Open-bolt operation allows the bolt to stay back until the trigger is pressed, aiding cooling and simplifying the mechanism during sustained bursts. These traits collectively describe the M240B, whereas water cooling, blowback operation, or semi-automatic fire would not match this weapon’s standard configuration.

The description you’re looking for is built from combining how the weapon is cooled, fed, operated, who uses it, and how it fires. The M240B fits all of these: it is air cooled, belt fed, gas operated, crew served, fully automatic, and fires from the open bolt position. Air cooling suits a weapon intended for sustained fire without the weight of water jackets. Belt feeding lets the gun run long belts for continuous fire, rather than swapping magazines. A gas-operated action uses gas tapped from each shot to cycle the bolt with a piston, which is more practical for a heavy machine gun than a blowback design. Being crew served means it’s designed for teams to operate and sustain fire. Fully automatic indicates continuous firing while the trigger is held and ammunition remains. Open-bolt operation allows the bolt to stay back until the trigger is pressed, aiding cooling and simplifying the mechanism during sustained bursts. These traits collectively describe the M240B, whereas water cooling, blowback operation, or semi-automatic fire would not match this weapon’s standard configuration.