Rexer light machinegun
Official wording
Rexer, original British made Madsen type light machineguns mfd. at the British Arms Factory known as Rexer.
What this entry requires
- ATF REQUIRESMade or imported as stated: “mfd. at the British Arms Factory known as Rexer”
- INFOATF states no date; production was about 1905–1907.
- INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).
Editorial facts · Our research
- Country
United KingdomBasis: no citation - Manufacturer
- Rexer Arms Co.Basis: outside reference ²
- Type
- MachinegunBasis: the ATF wording
- Action
- Select-fire / autoBasis: the ATF wording
- Caliber
- Not statedBasis: the ATF wording
- Made
- c. 1905–1907production; ATF states no dateBasis: outside reference ¹
- Service
- Military
Source
- Official wording
- ATF P 5300.11, April 2025 edition · Section IV · PDF p. 86 ↗ · 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. Wikipedia, “Madsen machine gun” ↗, years: In Britain, the Rexer Arms Company manufactured the Madsen with license from 1905 till 1907
- 2. Wikipedia, “Madsen machine gun” ↗, maker: Rexer Arms Company
- 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
- Data-trust reviewEditorial confidence: Low → Medium. Rexer Arms Company manufactured the Madsen under licence from 1905 till 1907
- Data-trust reviewYears: 1904–1914 → 1905–1907. Rexer Arms Company manufactured the Madsen under licence from 1905 till 1907
Historical context

Image: Wikimedia Commons, “111-SC-33930 - NARA - 55227044 (cropped).jpg” by US Army Signal Corps, Public domain. Retrieved October 2026.
Summary: Wikipedia, “Madsen machine gun”. Text CC BY-SA 4.0.
FROM WIKIPEDIA
The Madsen is a light machine gun that Julius A. Rasmussen and Theodor Schouboe designed and proposed for adoption by Colonel Vilhelm Herman Oluf Madsen, the Danish Minister of War, and that the Royal Danish Army adopted in 1902. It was the world's first true light machine gun produced in quantity and Madsen was able to sell it in 12 calibres to over 34 countries. The gun saw extensive combat usage for over 100 years, with continued use in limited quantities worldwide into the modern day. The Madsen was primarily produced by Compagnie Madsen A/S.