Sturm Ruger Mark II Target KMK-512 .22 LR Stainless, 5.5 in Bull Barrel, 1986, Adjustable Rear Sight, 2 Mags
This Ruger Mark II Target is the stainless KMK-512 configuration from 1986, featuring a 5.5-inch bull barrel fixed to the receiver and a brushed stainless finish. It is equipped with a fully adjustable target rear sight, a fixed front blade, and a target trigger with an adjustable overtravel stop. The pistol retains the Mark II system with an automatic last-round bolt hold-open and no magazine disconnect, and it comes with aftermarket wraparound finger-groove rubber grips installed.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minor, superficial scratches and blemishes on exterior surfaces.
What’s Included
- Two 10-round single-stack steel magazines (Ruger Mark II pattern)
- Aftermarket wraparound finger-groove black rubber grips (installed)
The KMK-512 designation identifies this as the stainless 5.5-inch bull-barrel Target model. The barrel/receiver assembly is the serialized component, and the right-side receiver rollmark reads "RUGER .22 CAL. LONG RIFLE MARK II TARGET." Production is confirmed for 1986 per Ruger’s serial table.
The sighting setup is purpose-built for precision, with a fully adjustable target rear sight and a screw-retained fixed front blade on a ramp. The heavy bull barrel is fixed to the receiver, contributing to stability and consistent alignment.
Controls follow the classic Mark II layout, including a heel-type magazine release and a manual thumb safety. The action is a semi-automatic blowback system with an automatic last-round bolt hold-open, and the design omits a magazine disconnect. Capacity is 10+1 rounds of .22 LR.
This example includes non-factory wraparound finger-groove black rubber grips that are installed. The brushed stainless finish is carried across the frame and receiver for a uniform look and durable surface.