What is an important storage consideration for M240 ammunition?

Storing ammunition away from heat sources is crucial for maintaining the integrity and safety of the ammunition. Excessive heat can compromise the propellant within the rounds, leading to potential degradation of performance and safety hazards, including the risk of misfire or unintended discharge. Proper storage in a cool environment helps ensure that the ammunition remains safe and effective when it is needed. It also prolongs the shelf life of the ammunition, as temperature fluctuations can cause moisture buildup and other issues that may negatively impact its reliability.