What constitutes Condition 4 for the M240B?

Condition 4 for the M240B is defined as having the bolt forward, chamber empty, no rounds on the feed tray, the cover closed, and the weapon on fire. This condition indicates that the weapon is safe for transport or storage because it is not loaded and has no rounds ready to be fired.

Having the bolt forward but the chamber empty and the feed tray devoid of ammunition means that the weapon is in a safe state, preventing any accidental discharges. The cover being closed further protects the internal mechanisms from debris and moisture, which could affect the weapon’s reliability. Even though the weapon is in a state that is generally safe, the selector switch in the fire position highlights that it is ready to be made operational quickly when needed, but it is not actively loaded or prepared to fire.

In contrast, the other options describe conditions that either indicate the weapon is loaded (which would be correct for other conditions) or have the weapon set up in a manner where it could be readily fired. This clarification helps ensure that personnel can identify the correct status of the firearm and can take appropriate actions based on the weapon's condition.