Ruger MK III

Ruger MK III
The Ruger MK III Target with 5½" bull barrel
Type	Pistols
Place of origin	United States
Production history
Manufacturer	Sturm, Ruger & Co.
Produced	2004—2016
Variants	See Models
Specifications
Weight	31–45 oz (880–1,280 g)
Length	9–11.12 in (229–282 mm)
Barrel length	4.75–6.88 in (121–175 mm)
Cartridge	.22 LR
Barrels	1:16" Right hand twist
Action	Blowback
Feed system	10-round magazine

The Ruger Mark III is a .22 Long Rifle semi-automatic pistol manufactured by Sturm, Ruger & Company. It is the successor to the Ruger MK II, and includes several new features. In 2016, the Mark III was succeeded by the Ruger Mark IV, with production of the Mark III ending on December 8, 2016.

The first lineup is simply known as Mark III. The pistol's barrel is made from steel bar and is threaded into the receiver which is made from steel tube. The barrel is not removable without machining, though. The layout is similar to the Luger P08, although the operating mechanism was originally copied from the Nambu pistol.

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The second lineup is named Mark III 22/45. These pistols have a polymer frame, and the steel barrel is installed nearly permanently into a tubular steel receiver. The grip angle emulates that of a M1911.

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