The Ruger Mark III pistol is a blowback operated, semi-automatic rimfire pistol chambered in .22 Long Rifle. It is fed from a ten round box magazine.¹

Ruger manufactured the Mark III from 2004 until 2016.² It was available in:

• • • Standard – as described above
    • Target – longer heavyweight barrel to aid with target shooting
    • Government Target – longer heavyweight barrel to aid with target shooting (sold to Government only)
    • Competition – slab-sided heavyweight barrel and target grips
    • Hunter – 6 7/8” target-crowned, fluted bull barrel, micro-adjustable V-notch rear sight, and a HiViz front sight
    • 22/45 –  polymer grip frame assembly, grip shape & angle similar to 1911 pistols

models. They came either blued or in stainless steel.³

gunsmithing notes:

• • • Later Ruger Mark III pistols (I do not have date or serial number range) were shipped without the Scope Base Adapter (Weaver-Style) ⇒.⁴
    • For competitive shooting, Classic American Gunsmith recommends the UltraDot MatchDot II ⇒ red dot sight for use on the Ruger Mark III pistol ⇒.

related:

• • • Ruger website: http://www.ruger.com/ ⇒
    • ShopRuger.com website: http://shopruger.com/ ⇒

1. Instruction Manual for Ruger Mark III Standard, Target, Government Target, Competition, Hunter & 22/45 Model Autoloading Pistols
2. Ruger Instruction Manuals & Product History page.
3. Instruction Manual for Ruger Mark III Standard, Target, Government Target, Competition, Hunter & 22/45 Model Autoloading Pistols
4. Ruger Customer Service. “Customer Service Call.” Telephone interview. 14 Feb. 2017.