The Ruger Mark IV 22/45 pistol in .22 LR with a 4.4-inch threaded barrel and black finish (brand part no. 40190) pairs the proven Mark IV rimfire action with a polymer grip frame that mimics the angle and feel of a 1911. Ruger threads the barrel for a suppressor and equips the pistol with fixed front and adjustable rear sights, an ambidextrous safety, and a 10+1 capacity with two included 10-round magazines. Among threaded rimfire semi-auto handguns, this Mark IV 22/45 configuration favors suppressor-equipped plinking and training.

Key Specifications

• The chambering is .22 LR.
• The capacity is 10+1 rounds.
• The barrel measures 4.4 inches and is threaded for suppressor use.
• The sights are fixed front, adjustable rear.
• The safety is ambidextrous, supporting right- or left-handed shooters.
• Two 10-round magazines are included.
• The action type is Single Action.
• Shipping weight of approximately 3.6 pounds.
• The rifling twist rate is 1-in-16 inches.

Frequently Asked Questions

Is the barrel threaded on this pistol? Yes, the 4.4-inch barrel is threaded for a suppressor.

How many magazines are included? Two 10-round magazines ship with the pistol.

Buy the Ruger Mark IV 22/45, Threaded Barrel

The proven Mark IV rimfire action with 1911-style grip ergonomics is exactly what this Ruger Mark IV 22/45, Threaded Barrel delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.