113: Very Rare Harington & Richardson Model Ultra Sidekick 939 in 22 LR with 6" Barrel. This revolver features a 9 shot cylinder, a 6" flat sided bull barrel with vented rib, swing out cylinder that has the release on the hammer which is very rear, adjustable sights, blue finish, solid frame, a square butt and checkered wood grips. The gun is in very good condition. Rare piece. Estimated Value: Low: $700 High: $850