Auxiliary objective lens for a firearm sight

Description

FIG. 1 is a side elevation of the auxiliary objective lens, shown as mounted on a typical firearm optical sight which is depicted in phantom line; for illustrative purposes only;

FIG. 2 is an end view of the solid-line structure shown in FIG. 1, and taken from the left end of FIG. 1; and

FIG. 3 is an end view of the solid-line structure in FIG. 1 taken from the right end of FIG. 1.