How can you identify the Night end of the MK-124?

The identification of the night end of the MK-124 flare is based on distinct physical characteristics, specifically its markings, raised rings, and a clear/opaque slide lever. The night end is designed to be easily distinguishable in low-light conditions, which is critical for its purpose as a signaling device. The raised rings provide tactile feedback, allowing the user to identify it by touch, even in darkness. The clear or opaque slide lever also aids in differentiating this end from the day end, which has a different configuration.

In contrast, while color may be a factor in some contexts, relying solely on color can be misleading as lighting conditions and visual perception can affect how colors are perceived. Size alone is not a sufficient criterion for identification, as both ends of the MK-124 may share similar dimensions. Lastly, markings alone do not provide enough context without the combination of tactile features such as the raised rings and lever mechanism, making them inadequate for accurate identification.