This specific designation refers to a variant of the Ruger Mark III series of .22 Long Rifle caliber semi-automatic pistols. It typically features a longer barrel, adjustable sights, and a heavier, more stable frame constructed from stainless steel. This combination of features is intended to enhance accuracy and durability, making it suitable for target shooting and competitive events.
The stainless steel construction offers superior resistance to corrosion and wear, contributing to a longer service life and reducing maintenance requirements. The increased weight of the stainless steel frame, combined with a longer barrel, helps mitigate recoil and muzzle flip, promoting better shot-to-shot consistency. The adjustable sights allow for precise zeroing and customization to individual preferences or specific ammunition types. This model has established a reputation for reliability and accuracy, making it a popular choice among target shooters.