Ruger 40190 Mark IV 22/45 22 LR 10+1 4.40″ Steel Threaded Bull Barrel, Blued Picatinny Rail Receiver, Blued Polymer Frame, Black Checkered Polymer Grip

The Ruger 40190 Mark IV 22/45 is a reliable and accurate .22 LR pistol featuring a 10+1 capacity. It includes a 4.40-inch cold hammer-forged, blued steel threaded bull barrel with a thread protector for attaching muzzle accessories. The pistol combines a blued picatinny rail alloy steel receiver with a durable blued polymer frame.

Design and Construction

• One-button takedown system for speedy and tool-free field stripping, allowing the barrel-receiver assembly to tilt up and off the grip frame for easier chamber-to-muzzle cleaning.
• Comfortable polymer grip frame with serrated frontstrap and checkered synthetic 1911-style grip panels for a secure non-slip hold.
• Factory-installed Picatinny rail allows easy mounting of optics and accessories.
• Ambidextrous manual safety, which can be converted to left-side only operation with the included washer.
• Push-button magazine release located on the left side of the frame, with the magazine dropping free upon release.
• Magazine disconnect safety prevents firing when the magazine has been removed.
• Ergonomic bolt stop and contoured ejection port enhance reliable and durable operation.

Performance and Specifications

• Caliber: .22 LR
• Capacity: 10+1 rounds
• Barrel length: 4.40 inches (11.1 cm)
• Barrel style: Threaded bull barrel with 1/2"-28 thread pitch
• Weight: 33.3 oz (944 g)
• Overall length: 8.50 inches (21.5 cm)
• Height: 5.50 inches (13.9 cm)
• Grooves: 6 with a 1:16" RH twist rate for improved accuracy
• Receiver Material: Alloy Steel
• Finish: Blued
• Front sight: Fixed
• Rear sight: Adjustable

Included Items

• Two 10-round magazines

The Ruger Mark IV 22/45 blends straightforward maintenance with comfortable 1911-style ergonomics and accessory-ready features, making it an excellent platform for target shooting and training.