Which weighs between 70 and 80 units?

• A. MK19 receiver
• B. Total weight of the M2
• C. Weight of the 240B Barrel
• D. M2 Barrel

Answer: (A)

Focusing on how weights are distributed in heavy weapons, the heaviest single component among these options is the MK19 receiver. The receiver is the core frame that houses the action, feed mechanism, and mounting interface, so it carries most of the weapon’s structural weight. For the MK19, this heavy central part sits in the 70s pounds range, placing it between 70 and 80 units.

In contrast, the M2 as a complete system (gun with mount) weighs more than that typical 70–80 range, and the barrels for the 240B and M2 are much lighter components, usually only single-digit to low tens of pounds.