The Ruger Mark IV 22/45 Lite pistol in USMC red with a 4.4-inch threaded barrel (brand part no. 43942) pairs a 1911-style grip angle with a lightweight, ventilated aerospace-grade aluminum receiver for a fast-handling rimfire trainer. Ruger / Sturm, Ruger & Co. chambers the pistol in .22 LR with a 10+1 capacity, and the tensioned stainless steel barrel is threaded with a 1/2-28 pattern for popular muzzle accessories, with a thread protector included. A simple one-button takedown allows the barrel-receiver assembly to tilt up and off the grip frame without tools, and checkered 1911-style grip panels give a comfortable, non-slip hold. An adjustable rear sight pairs with a factory-installed Picatinny rail for mounting optics, and an ambidextrous manual safety and magazine disconnect round out the safety features; two 10-round magazines ship with the pistol. Among rimfire semi-auto handguns, this Mark IV 22/45 Lite configuration favors trainers and plinkers who want easy takedown and suppressor compatibility.

Key Specifications

• The chambering is .22 LR, and the capacity is 10+1 rounds.
• The barrel measures 4.4 inches and is threaded in a 1/2-28 pattern.
• The receiver is lightweight, ventilated aerospace-grade aluminum.
• The design allows one-button takedown without tools.
• The sights pair an adjustable rear with a factory Picatinny rail for optics.
• The safety includes an ambidextrous manual safety and magazine disconnect.

Frequently Asked Questions

Is the barrel threaded for a suppressor? Yes, the 1/2-28 thread pattern is compatible with Ruger’s Silent-SR sound suppressor.

How does takedown work on this pistol? A single button lets the barrel-receiver assembly tilt up and off the grip frame without tools.

Buy the Ruger Mark IV 22/45 Lite, .22 LR

A lightweight aerospace-grade aluminum receiver with a 1911-style grip angle for fast rimfire handling is exactly what this Ruger Mark IV 22/45 Lite delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.