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.
Field of view is adequate at all magnifications. The Nikon rings, since they are each one piece, allow a variety of mounting options. I mounted the Nikon scope and Nikon rings on a Tactical solutions 4.6 20 MOA picatinny rail on my Ruger 10/22 takedown .22 caliber rifle. With the scope mounted on my rifle, I am able to fit the rifle in the Ruger backpack style case. Pros: Integrates perfectly with my Tactical Solutions 4.6 picatiny rail. Design allows for a variety mounting options (flip horizontally).