Sumo Prescription lens holder soon to be ISSF legal for smallbore rifles

The proposed 2017 ISSF rule changes include the option to fit a corrective lens to your rifle rear sight.  This is sure to keep many smallbore shooters in the sport as their eyes age and require correction.  Sumo Sight Prescription lens holder will screw straight into most small bore rear sights.

http://www.sumosight.com/prescription-lens-holder/