C&R · IIIA · 056
Hotchkiss Mountain Gun Model 1875
Section IIIA: removed from the NFA, classed as an antique (outside the GCA)
Official wording
ATF P 5300.11 · APRIL 2025 EDITION · SECTION IIIA · VERBATIM · PDF P. 64 ↗
Hotchkiss Ordnance Company, Mountain Gun Model 1875, cal. 1.65”.
What this entry requires
- ATF REQUIRESMade 1898 or earlier (ATF’s dates)
- INFOAn antique under federal law, outside the GCA.
Editorial facts · Our research
- Country
FranceBasis: outside reference ⁶- Manufacturer
- Hotchkiss et CieBasis: outside reference ²
- Type
- CannonBasis: the ATF wording
- Action
- OtherBasis: outside reference ⁴
- Caliber
- 1.65-inchBasis: outside reference ⁵
- Made
- 1877–1897ATF: made in 1898 or earlier; start year approximateBasis: outside reference ¹
- Service
- Military
Source
- Official wording
- ATF P 5300.11, April 2025 edition · Section IIIA · PDF p. 64 ↗ · 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, “M1875 mountain gun” ↗, years: designed 1875, produced 1877–1897, 57 built
- 2. Wikipedia, “M1875 mountain gun” ↗, maker: designer and manufacturer: Hotchkiss et Cie
- 3. Wikipedia, “M1875 mountain gun” ↗, service: used by the United States Army in the last quarter of the 19th century
- 4. Wikipedia, “M1875 mountain gun” ↗, action: horizontal sliding-block breech
- 5. Wikipedia, “M1875 mountain gun” ↗, calibers: 1.65 in (42 mm)
- 6. Wikipedia, “M1875 mountain gun” ↗, country: 'A Hotchkiss design from the French arms firm, Hotchkiss & Company'; designer and manufacturer Hotchkiss et Cie
- 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

Image: Wikimedia Commons, “1.65inchMtnGun.png” by Sturmvogel 66, CC BY-SA 3.0. Retrieved October 2026.
Summary: Wikipedia, “M1875 mountain gun”. Text CC BY-SA 4.0.
FROM WIKIPEDIA
The M1875 mountain gun is a mountain gun that was used by the United States Army during the last quarter of the nineteenth century.