Ruger Mark IV 22/45 Rimfire Pistol – .22 LR, Includes 10-Round Magazine & Threaded Barrel

The Ruger Mark IV 22/45 .22 LR Pistol is the perfect fusion of classic .22 reliability and modern tactical adaptability. This model (40190) sports a 4.40″ cold hammer-forged bull barrel with a 1/2″-28 threaded muzzle, ready to accept your favorite suppressors and muzzle devices. Built for precise shooting and fast follow-ups, it offers the kind of performance both new shooters and seasoned marksmen will appreciate.

Field-stripping has never been easier thanks to Ruger’s simple one-button takedown system—just press the button at the rear of the frame to lift off the upper receiver for easy chamber-to-muzzle cleaning with no tools required. The internal cylindrical bolt design ensures fixed sight-to-barrel alignment for improved accuracy, while the alloy steel receiver and blued finish offer long-lasting durability.

Featuring a polymer 1911-style grip frame with checkered synthetic panels and front/backstrap texturing, this pistol gives you a secure, comfortable hold. The adjustable rear sight and fixed front sight allow for dialed-in accuracy out of the box, and the factory-installed Picatinny rail makes adding optics a breeze.

The Mark IV 22/45 includes two 10-round magazines, and its magazine disconnect and ambidextrous manual safety offer added peace of mind. Whether you’re plinking at the range, teaching a new shooter, or building a suppressed setup, the Ruger Mark IV 22/45 delivers reliability, accuracy, and unbeatable ease of maintenance.

Key Features:

• Chambered in .22 LR with a 10+1 capacity

• Cold hammer-forged, threaded bull barrel (1/2″-28)

• One-button takedown for easy cleaning

• Alloy steel receiver with a blued finish

• Checkered 1911-style polymer grip frame

• Adjustable rear sight and fixed front sight

• Factory Picatinny rail for optics

• Ambidextrous safety (convertible to left-side only)

• Two 10-round magazines included