The resulting barrel chest is a similar presentation in the upper torso to the appearance of the finger joints as someone ages with this condition. The ribs become fixed in their most expanded position, giving the appearance of a barrel chest, and this can also cause respiratory limitations during exercise.
In the overhand hold, the tactical ring aids in retention and keeps the light properly positioned for use. Alternatively the light can be quickly flipped into a back-hand hold allowing a two-handed grip on the weapon.
This type of flashlight comes in handy in particularly aggravating or potentially dangerous situations, such as when your batteries are dead, because the inner-workings of a hand crank flashlight can take the energy a user puts into it via turning the crank in use it to power the light or other functions of the device.