C&R · IV · 166

Madsen Model 1950

Section IV: still an NFA firearm, also a curio or relic

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION IV · VERBATIM · PDF P. 86 ↗

Madsen, Model 1950 machinegun.

ATF calls this a machinegun and states no caliber. Madsen’s Model 1950 is best known as a 9mm submachinegun; identification is ours.

INFOATF states no date; production was about 1950–1953.
INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).

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 M-50” ↗, years: introduced 1950; introduction ran from 7 November 1950 until 1953
2. Wikipedia, “Madsen M-50” ↗, maker: Dansk Industri Syndikat, Copenhagen
3. Wikipedia, “Madsen M-50” ↗, type: submachine gun, 9×19mm

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

1 change · see below

17 October 2026Data-trust reviewEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.

Image: Wikimedia Commons, “Submachine Guns (9885170076) (cropped).jpg” by Gary Todd from Xinzheng, China, CC0. Retrieved October 2026.

Summary: Wikipedia, “Madsen M-50”. Text CC BY-SA 4.0.

The Madsen M-50 or M/50 is a submachine gun introduced in 1950. It was produced by the Danish company Dansk Industri Syndikat of Copenhagen, Denmark.