It seems that Ruger is “all in” on the new Mark IV line of .22 pistols. I’m not surprised, but I am a little awestruck at how quickly the company is swapping over its entire catalog from the older Mark III to the new Mark IV.

Take, for example, one of the latest guns to jump lines: the 22/45. The 22/45 in the Mark III line was very popular as it merged the ergonomics of the 1911 platform with the accuracy and reliability of the rimfire platform. As recently announced, Ruger is now making rhe 22/45 in the Mark IV line.

The new 22/45 uses the same one button take down that is one of the stand out features of the Mark IV guns. Likewise, the guns have an ambidextrous safety. However, instead of using the standard Ruger angle on the grip, the company uses a 1911 style grip angle.

Adjustable sights are standard. The gun is drilled and tapped for the addition of an optic if desired.

Somewhat strangely, the Mark IV 22/45 introduction comes after the introductions of the Mark IV 22/45 Lite that was announced prior to the SHOT Show and the Mark IV 22/45 Tactical that rolled out in March.

These guns ship with a pair of 10-round magazines. Magazines drop free from the gun when ejected, and there is a magazine safety disconnect in the gun. This prevents the gun from firing when the magazine is out of the pistol.

Ruger lists the suggested retail price at $409. No, they are not approved for sale in California or Massachusetts.