Ruger Mark II Target KMK512 .22 LR Stainless 5.5" Bull-Barrel Semi-Auto Pistol
This stainless Ruger Mark II Target KMK512 combines the classic Luger-angle grip with a 5.5-inch heavy bull barrel and fully adjustable sights. Built in the 1980s and discontinued in 2005, it features the desirable pre-magazine-disconnect action and a rigid, one-piece barreled receiver prized for accuracy. Its excellent overall condition, factory box, and original documentation make it an appealing choice for shooters and collectors who value Ruger’s renowned .22 LR platform.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: The satin stainless surfaces display a few micro-scratches and light handling marks. These superficial lines are thin and shallow, with no effect on function or structural integrity.
What’s Included
- Original Ruger yellow cardboard factory box
- Ruger Mark II instruction manual
- “Firearms Safety Depends on You” booklet
- Factory Ruger Mark II steel 10-round magazine
The KMK512 designation denotes a stainless, 5.5-inch bull barrel that delivers excellent balance and heat resistance. The barrel and receiver are machined from a single stainless steel forging, keeping the sights rigidly aligned with the bore.
Ruger’s blowback-operated, single-action system provides a crisp trigger and reliable cycling with standard or high-velocity .22 LR ammunition. The pistol retains the original heel-type magazine release and last-shot bolt hold-open, features many enthusiasts prefer for their simplicity and positive operation.
A fully adjustable square-notch rear sight and Patridge front blade allow precise zeroing for target work. The black checkered Zytel grips, set at an angled 55-degree rake, promote a natural pointing feel reminiscent of the classic Luger.
The Mark II Target series was discontinued in 2005, giving this 213-prefix example added collector interest. Its lack of a magazine disconnect, combined with its excellent mechanical and cosmetic state, positions it as a desirable specimen of Ruger’s most popular rimfire line.