Ruger Standard Model Mark I .22 LR 4.75" Semi-Auto Pistol | 1955 Pre-A100 Collectible
Built in 1955, this first-generation Ruger Standard Model Mark I represents the early evolution of Bill Ruger’s iconic .22 rimfire pistol line. It features the pre-A100 frame without a bolt hold-open, right-side magazine follower slot, and period-correct silver-eagle grip medallions. The 4.75-inch tapered barrel, in-the-white cylindrical bolt, and blued steel construction give collectors and shooters a true glimpse of Ruger’s original design.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Rifling Condition: Excellent – Sharp lands and grooves.
Specific condition notes: The exterior shows finish loss, blemishes, and scratches consistent with regular range use, yet the bore remains bright and serviceable for its age.
What’s Included
- Ruger Standard Model Mark I pistol
- 1 × factory Ruger 9-round steel magazine (original Standard/Mark I pattern)
This pistol is part of the earliest “Standard” series, produced before Ruger introduced the A100 frame changes. Collectors value these guns for their lack of a bolt hold-open and their distinctive right-side magazine slot, traits found only on 1949–1959 production.
The serial number in the 104xxx range confirms 1955 manufacture, placing it midway through first-generation production and aligning with the era of silver-eagle grip medallions used from 1952 to 1959.
A 4.75-inch tapered carbon-steel barrel keeps the profile slim and well-balanced, distinguishing this variant from later heavy-barrel Target models. The blowback, single-action mechanism remains simple and reliable, aided by an internal hammer and heel-type magazine release.
Fixed Patridge-style front and rear notch sights provide a period-correct sight picture. The blued steel frame, tubular receiver, and checkered black synthetic grips retain the classic look that kicked off Ruger’s enduring .22 pistol legacy.