The Ruger Mark IV Tactical is a single-action semi-automatic pistol chambered in .22 LR, with a 4.4-inch barrel, 10+1 capacity, and blued finish. It weighs 34.6 ounces and measures 8.5 inches overall. 
 

Key Specifications 

• Brand: Ruger 
• Model: Mark IV Tactical 
• Caliber: .22 LR 
• Action Type: Semi-Auto (Single Action) 
• Capacity: 10+1 Rounds 
• Barrel Length: 4.4 inches 
• Overall Length: 8.5 inches 
• Weight: 34.6 oz (2.16 lbs) 
• Sights: Fixed Front / Adjustable Rear 
• Grip: Synthetic Black Checkered with Ruger Medallion 
• Safety: Manual Thumb Safety (Ambidextrous) 
• Finish: Blued 
   

Detailed Features 

The Mark IV's most notable change from previous Mark series pistols is the one-button takedown: press the button at the rear of the frame and the pistol separates for cleaning without any tools or fumbling. The internal cylindrical bolt keeps the sights rigidly aligned to the barrel regardless of how many rounds have cycled. The aluminum grip frame is contoured and accepts checkered replacement panels. Receiver is drilled and tapped for Weaver or Picatinny rail optic mounts. Magazine disconnect prevents firing with the magazine removed. 
 

Usage Scenarios 

• Range Training: The light recoil, adjustable rear sight, and 10+1 capacity make it efficient for extended target practice. 
• Small Game and Pest Control: The 4.4-inch barrel and .22 LR caliber are suited for close-range pest control and small game. 
• Rimfire Competition: Consistent action and adjustable sighting support precision rimfire events.

The Ruger Mark IV Tactical gets broadly positive feedback, with accuracy and the one-button takedown system drawing consistent praise. The simplified disassembly relative to older Mark series pistols is specifically appreciated by new owners who found earlier models frustrating to clean.

Ergonomics are well regarded. The grip angle and single-action trigger are comfortable for extended range sessions, and shooters transitioning from centerfire platforms find the handling familiar.

At 34.6 oz, some users find the Mark IV heavier than expected for a .22. Reliability is generally good, though occasional issues with specific bulk-pack ammunition are mentioned, as is typical for rimfire pistols.

The receiver's optic-ready mounting is a plus for buyers who want a red dot for precision work. Overall, it's consistently recommended as a solid .22 LR target pistol and training tool.