Ruger Mark IV Standard .22 LR
Model: 40105
Ruger Mark IV Standard .22 LR
Model: 40105
Full Specifications
About This Firearm
The Ruger Mark IV Standard is a blued semi-automatic .22 LR target pistol built for range work and plinking. It has an MSRP of $579 and weighs 30.1 oz over a 6.0-inch tapered barrel. Its grip frame is machined from a single piece of aluminum, and the whole barrelled action lifts off it with one button and no tools.
The sights are fixed at both ends. The barrel is cold hammer forged. The bolt is an internal cylinder with ears at the back to pull on and a bolt stop shaped to the thumb. The magazine release is a push button on the left side and magazines drop free when it is pressed, and a magazine disconnect stops the pistol firing with the magazine out. Two 10-round magazines come with it. The pistol is 10.25 inches long, 5.4 inches tall and 1.2 inches across.
If you're cross-shopping, the Ruger Mark IV 22/45 Lite is the light version of the same action, 5.1 oz less at 25.0 oz on a 4.4-inch threaded barrel with a Picatinny rail already installed and a 1911-pattern grip. The Browning Buck Mark Standard URX has an MSRP of $600 at 34.0 oz, with adjustable Pro-Target sights front and rear on a 5.5-inch barrel, so the fixed sights here are part of what the lower price gives up.
Best For
Strengths & Limitations
- The grip frame is CNC-machined from one piece of aluminum, so there is no pinned or welded joint in it to loosen.
- The barrel is cold hammer forged, which work-hardens the bore as it is formed, so Ruger asks for no break-in period.
- The receiver is drilled and tapped for a Weaver or Picatinny-style rail, so adding a dot takes no machining.
- The sights do not adjust at either end, so zeroing for a particular .22 load comes down to choosing the load.
- The rail for an optic is a separate purchase even though the holes are already there, so a dot costs the mount as well as the sight.
- The barrel and its finish are blued steel, so a damp range bag will start surface rust where stainless or Cerakote would not.
Category Rankings
How the Ruger Mark IV Standard .22 LR ranks among full-size .22 LR handguns.
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Where to Buy
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Frequently Asked Questions
What changed from the Mark III?
Takedown. A Mark III had to be stripped and reassembled in a particular order with the magazine in place, and the Mark IV comes apart with one button at the back of the frame.
Is the magazine disconnect removable?
Ruger fits it as part of the design and does not offer a delete option, so a pistol that will fire without a magazine is not a configuration the factory sells.
What comes in the box?
The pistol and two 10-round magazines. The optics rail, a holster and any spare magazines beyond those two are separate purchases.
