Ruger Mark IV 22/45 .22 LR 5.5" Bull Barrel 10+1 Capacity

The Ruger Mark IV 22/45 delivers exceptional accuracy and reliability for target shooting and training applications. This rimfire pistol combines the proven Mark IV action with a polymer grip frame that mimics centerfire pistol ergonomics. The stainless steel bull barrel provides consistent performance shot after shot.

What Makes This Different

The Mark IV 22/45 features Ruger's one-button takedown system that allows complete disassembly without tools in seconds. Unlike previous Mark series pistols that required complicated field stripping procedures, this design separates the barrel/receiver assembly from the grip frame with a single button push. The 5.5-inch stainless bull barrel maintains rigidity under rapid fire while the drilled and tapped receiver accepts popular optic mounting systems.

Key Features

• One-button takedown system enables tool-free disassembly in seconds
• 5.5-inch stainless steel bull barrel with target crown for enhanced accuracy
• Polymer grip frame with checkered surfaces matches centerfire pistol angle
• Drilled and tapped steel receiver accepts Weaver-style scope bases
• Ambidextrous manual safety and magazine release
• 10-round flush-fit magazine with last-round hold-open
• Blued steel receiver with satin stainless barrel finish

The bull barrel configuration reduces harmonic vibration during firing, contributing to consistent group sizes at 25 and 50 yards. Competition shooters appreciate the extended sight radius and reduced muzzle flip characteristics. The polymer frame reduces overall weight compared to all-steel variants while maintaining structural integrity through thousands of rounds. Weather-resistant finishes handle outdoor training environments and storage conditions.

Technical Specs

• Caliber: .22 Long Rifle
• Capacity: 10+1 rounds
• Barrel Length: 5.5 inches
• Overall Length: 9.75 inches
• Weight: Approximately 35 ounces
• Frame Material: Black checkered polymer
• Receiver: Blued alloy steel, drilled and tapped
• Barrel: Stainless steel bull profile with target crown
• Safety: Ambidextrous manual thumb safety
• Sights: Fixed front and rear (optics-ready receiver)
• Made in USA with limited warranty

This Mark IV 22/45 represents decades of refinement in rimfire pistol design with modern manufacturing precision. The combination of proven reliability, enhanced takedown convenience, and competition-ready accuracy makes it a standout choice for serious shooters. Current production models ship with updated internal components and quality control standards.