C&R · III · 155
U.S. Coast Guard 37mm cannon, S/N M1-1903
Section III: removed from the NFA, curio or relic under the GCA
Official wording
ATF P 5300.11 · APRIL 2025 EDITION · SECTION III · VERBATIM · PDF P. 45 ↗
U.S. Coast Guard Cannon, 37mm, S/N M1-1903, as mfd. by the Rapid Fire Gun Company.
What this entry requires
- ATF REQUIRESMade or imported as stated: “as mfd. by the Rapid Fire Gun Company”
- ATF REQUIRESYour serial number is one ATF listsATF: “S/N M1-1903”
- INFOATF states no date; production was about 1903–1920.
Editorial facts · Our research
Low editorial confidence. Some details below couldn’t be confirmed from independent sources. The ATF wording is unaffected. About confidence
- Country
United StatesBasis: the ATF wording - Manufacturer
- Rapid Fire Gun Co.Basis: the ATF wording
- Type
- CannonBasis: the ATF wording
- Action
- OtherBasis: no citation
- Caliber
- 37mmBasis: the ATF wording
- Made
- Listed serial only · c. 1903–1920production; ATF states no dateBasis: no citation
- Service
- Military
Source
- Official wording
- ATF P 5300.11, April 2025 edition · Section III · PDF p. 45 ↗ · ATF original ↗
- Entries
- 1 line
- Verbatim check
- Checked against the PDF text before every release
- Editorial facts
- Confidence: Low · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
- References
- None attached yet
- 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.