How many safeties, other than the gunner, does the M2 machine gun have?

The M2 machine gun is designed with a high degree of safety in mind, primarily due to its significant firepower and the potential hazards associated with its operation. The gunner is considered the primary safety due to their responsibility for ensuring that the weapon is operated safely and in accordance with standard operating procedures.

The design of the M2 machine gun includes features that mitigate the risk of accidental discharge, but when it comes to additional safeties, it does not have any built-in safety mechanisms in the form of secondary locks or devices. The reliance is largely on the gunner's training, behavior, and adherence to safety protocols, emphasizing the importance of the operator's role.

Thus, stating that there are no safeties other than the gunner accurately reflects the M2 machine gun's safety design philosophy, which incorporates strict user discipline rather than multiple mechanical safeties. This understanding reinforces the significance of ensuring that only trained and responsible personnel handle such powerful weaponry.