Source: ATF P 5300.11 · Curios or Relics List · Jan 1972 – Apr 20253,573 entries · 4 sections
The C&R RegisterA finding aid to the ATF Curios or Relics List, for Type 03 collectors
C&R · II · 444

Ruger Mark I, “U.S.” marked

Section II: curio or relic, still subject to the Gun Control Act

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION II · VERBATIM · PDF P. 14 ↗

Ruger, Mark I "U.S." stamped medallion, pistol with S/Ns 76000 - 79000.

What this entry requires

  • ATF REQUIRESYour firearm carries the marking “stamped medallion”
  • ATF REQUIRESYour serial number is one ATF listsATF: “with S/Ns 76000 - 79000”
  • INFOATF states no date; production was about 1956.

Editorial facts · Our research

Country
United States
Manufacturer
Sturm, Ruger & Co.
Type
Pistol
Action
Semi-auto
Caliber
.22³
Made
Listed serials only · c. 1956production; ATF states no date¹
Service
Military
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section II · PDF p. 14 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: Medium · Last revised 17 October 2026 (Data-trust review) · How we rate confidence
References
  1. laststandonzombieisland.com ↗, years: 1956 first military order of 4,600 heavy-barrel Mark I pistols, S/Ns 75845-79945, marked 'U.S.' on the receiver
  2. laststandonzombieisland.com ↗, service: ordered by the U.S. military for service marksmanship teams
  3. ruger.com ↗, calibers: Standard & Mark I: 22 LR
Fact tags
  • ATF the ATF wording states it.
  • REF ¹ an outside reference supports it; the number points to the list of references.
  • ESTIMATE an approximate or indirect reading, for example the production range of the base model.
  • NO CITATION we haven’t attached a reference for this fact; it’s our editorial reading, not ATF’s.
Source checked
20 October 2026: ATF’s page still lists the April 2025 edition
Corrections
2 changes · see below

Correction history

  1. Data-trust reviewEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.
  2. Data-trust reviewYears: 1951–1960 → 1956. The first U.S. military order (4,600 guns, S/Ns 75845–79945, all marked 'U.S.') was made in 1956; ATF's 76000–79000 falls inside it

All corrections · How corrections work

Historical context

Ruger Standard (base model shown for Ruger Mark I, “U.S.” marked)
Shown: a Ruger Standard pistol, not this “U.S.”-marked Mark I.

Image: Wikimedia Commons, “Ruger Standard Pistol wood grips.jpg” by Faceless Enemy, CC BY-SA 3.0. Retrieved October 2026.

Summary: Wikipedia, “Ruger Standard”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Ruger Standard Model is a rimfire semi-automatic pistol introduced in 1949 as the first product manufactured by Sturm, Ruger & Co., and was the founding member of a product line of .22 Long Rifle cartridge handguns, including its later iterations: the MK II, MK III, and MK IV. It is marketed as an inexpensive .22 caliber rimfire intended for casual sport and target shooting, and plinking. Designed by company founder William B. Ruger, the Standard model and its variants are the most sold .22 caliber semi-automatic pistols ever produced.