Introduced in 1962. Patridge blade front sight with an adjustable notch rear, 10 shot magazine, target grade barrel with detachable muzzle brake and a pair of weights, serrated target trigger, push button takedown and checkered plastic slant grips with brass inlaid High Standard medallions. Standard markings on frame and slide with "U.S. marked on the left side above the trigger guard. With a parkerized World War II Colt Service Model Ace 22 LR conversion kit, five Colt magazines and two extra Hi-Standard magazines.