Which statement is correct regarding the firing position of the M249?

The correct statement regarding the firing position of the M249 is that it fires from a closed bolt position. This is significant as it enhances accuracy for the first shot by allowing the round to be seated precisely in the chamber before firing. When the weapon is fired from a closed bolt, the chamber is sealed, reducing the chances of misfires and ensuring a more controlled firing process.

In contrast, the other options do not accurately describe the M249's capabilities or design. The M249 is not limited to shoulder firing; it can also be fired from the prone or supported positions, which enhances flexibility during combat situations. Furthermore, it operates as a fully automatic weapon in addition to having the ability to be fired semi-automatically, but its primary role is that of a machine gun delivering sustained fire. Lastly, while the M249 can be fed from a magazine, it is primarily designed to utilize a belt-fed ammunition system, thereby supporting its role in providing sustained fire.