Ruger Mark IV Target 22 LR 5.5'' 10-Rd Semi-Auto Pistol

Description

The Ruger Mark IV Target Model 40183 is a California-approved .22 LR semi-automatic rimfire pistol featuring a 5.50-inch cold hammer-forged bull barrel, 10+1 capacity, blued alloy-steel construction, aluminum grip frame, adjustable rear sight, and Ruger’s one-button takedown system. Ruger identifies this exact configuration as Model 40183 / UPC 736676401833.

The Mark IV Target is built around Ruger’s rigid one-piece barreled receiver and internal cylindrical bolt design. Because the barrel and sights remain stationary during operation, the design maintains consistent sight-to-barrel alignment and provides the accuracy potential associated with Ruger’s long-running Mark-series target pistols.

Model 40183 uses a 5.50-inch cold hammer-forged bull barrel with six grooves and a 1:16" right-hand twist. The pistol’s alloy-steel upper receives a traditional blued finish, while the bull-barrel profile adds forward weight and stability appropriate for recreational and target shooting.

The pistol is chambered in .22 Long Rifle with a factory capacity of 10+1 rounds. Ruger includes two 10-round magazines, and the push-button magazine release is positioned on the left side of the frame. Magazines are designed to drop free when released.

A defining improvement of the Mark IV platform is its one-button takedown system. Pressing the button at the rear of the frame allows the barrel-receiver assembly to tilt upward and separate from the grip frame without tools, substantially simplifying field stripping and chamber-to-muzzle cleaning compared with earlier Mark-series pistols.

For sighting, Model 40183 has a fixed front sight and adjustable rear sight. The receiver is also drilled and tapped for a Weaver- or Picatinny-style rail, providing a mounting solution for compatible optics when equipped with the appropriate rail.

The precision CNC-machined aluminum grip frame uses checkered synthetic grip panels and Ruger’s traditional natural-pointing grip angle. The grip panels are replaceable, allowing the pistol to be customized with compatible aftermarket options.

Safety features include an ambidextrous manual safety that can be converted to left-side-only operation using the included washer, along with a magazine disconnect that prevents firing when the magazine has been removed.

Model 40183 weighs 35.6 ounces and measures 9.75 inches overall, 5.50 inches high, and 1.20 inches wide. Ruger currently identifies it as California Approved, available for sale, and not Massachusetts approved.