Ruger Mark IV 22/45 .22LR 5.5" Threaded Barrel Pistol

The Ruger Mark IV 22/45 combines the proven reliability of the Mark IV platform with a polymer grip frame that mimics the feel of a centerfire pistol. This threaded barrel variant accepts suppressors and muzzle devices for enhanced shooting versatility.

What Makes This Different

The Mark IV series introduced Ruger's one-button takedown system, eliminating the complex disassembly process that plagued earlier generations. The 22/45 model features a grip angle matching that of the 1911 pistol, providing familiar handling characteristics for shooters transitioning between rimfire and centerfire platforms. The 5.5-inch bull barrel delivers superior accuracy compared to standard-length barrels while maintaining excellent balance.

Key Features

• One-button takedown system allows field stripping without tools in seconds
• Threaded 1/2x28 muzzle accepts suppressors and compensators
• Polymer grip frame with 1911-style grip angle and magazine release
• Adjustable rear sight and fixed front sight for precision targeting
• Internal bolt hold-open mechanism for safe handling
• Picatinny rail integrated into frame for optics mounting
• Ambidextrous manual safety and magazine disconnect safety

Competition shooters appreciate the consistent trigger pull and inherent accuracy of the bull barrel configuration. The threaded muzzle opens up training opportunities with suppressors, reducing noise for backyard practice where local ordinances permit. Range sessions become more enjoyable with reduced report and recoil, while maintaining the ballistic performance that makes .22LR ideal for precision training. The polymer frame reduces overall weight without sacrificing durability through thousands of rounds.

Technical Specs

• Caliber: .22 Long Rifle
• Barrel Length: 5.5 inches, bull profile
• Overall Length: 9.5 inches
• Weight: 35 ounces
• Frame Material: Glass-filled nylon polymer
• Barrel Material: Alloy steel with blued finish
• Magazine Capacity: 10 rounds
• Thread Pitch: 1/2x28 TPI
• Sights: Adjustable rear, fixed front
• Safety: Ambidextrous manual safety
• Country of Origin: USA

The Mark IV 22/45 represents decades of refinement in rimfire pistol design, delivering the accuracy and reliability Ruger built its reputation on. The threaded barrel configuration adds versatility that extends the platform's usefulness across multiple shooting disciplines. This model stands ready to serve as both a training tool and competition pistol.