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 · 066

Colt Ace

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. 4 ↗

Colt, Ace semiautomatic pistol, cal. .22, mfd. By Colt from 1931 to 1947, S/N range from 1 to 10935, including those marked “UNITED STATES PROPERTY” on the right side of the frame.

What this entry requires

  • ATF REQUIRESMade or imported as stated: “mfd. By Colt from 1931 to 1947”
  • ATF REQUIRESYour serial number is one ATF listsATF: “S/N range from 1 to 10935”
  • ATF REQUIRESMade 1931–1947 (ATF’s dates)ATF: “from 1931 to 1947”

Editorial facts · Our research

Country
United States¹
Manufacturer
Colt's Patent Fire Arms Mfg. Co.
Type
Pistol
Action
Semi-auto
Caliber
.22
Made
1931–1947
Service
Military
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Source

Official wording
ATF P 5300.11, April 2025 edition · Section II · PDF p. 4 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: High · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
References
  1. Wikipedia, “Colt's Manufacturing Company” ↗, country: Wikipedia: Colt's Manufacturing Company (formerly Colt's Patent Firearms Manufacturing Company), American, Hartford, Connecticut; the Colt Ace article covers this model
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
None

Historical context

NO VERIFIED IMAGE AVAILABLEWe show only freely licensed images verified to depict this model. None has been found yet.

Summary: Wikipedia, “Colt Ace”. Text CC BY-SA 4.0. Retrieved October 2026.

FROM WIKIPEDIA

The Colt Ace or Colt Service Model Ace is a Colt Model 1911-derived semi-automatic firearm chambered for the .22 Long Rifle cartridge instead of .45 ACP. It was created in 1931 and produced through 1947 to allow inexpensive and low-recoil sub-caliber training while maintaining the feel of the military Model 1911 pistol.