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.
Some of these requirements include: 1  Light output, measured in lumens. Most tactical flashlights put out 60+ lumens, while some go up to 1,600+. 2  Run time, which references how long it takes for the battery to reach 10% of its initial output. Ex: How long it would take a 100 lumen flashlight to reach a 10-lumen output.