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 · IV · 141

SIG Bergmann submachinegun (Japanese contract)

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. 85 ↗

Japanese, modified Bergmann (SIG), submachinegun, cal. 7.63mm, featuring bayonet-mounting lug.

ATF lists cal. 7.63mm; this is the 7.63mm Mauser cartridge.

What this entry requires

  • INFOATF states no date; production was about 1920–1927.
  • INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).

Editorial facts · Our research

Country
Switzerland²
Manufacturer
SIG, Neuhausen³
Type
SMG
Action
Select-fire / auto
Caliber
7.63mm Mauser
Made
c. 1920–1927production; ATF states no date¹
Service
Military
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section IV · PDF p. 85 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: Medium · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
References
  1. Wikipedia, “MP 18” ↗, years: production 1920–1927 (SIG 1920)
  2. Wikipedia, “MP 18” ↗, country: SIG made the SIG M1920; the SIG Bergmann 1920 was used by Finland, Japan and Estonia
  3. Wikipedia, “MP 18” ↗, maker: infobox manufacturer SIG (SIG M1920); 'The SIG Bergmann 1920 was used by Finland, Japan, and Estonia'
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

  1. Data-trust reviewEditorial confidence: Low → Medium. SIG Bergmann 1920 production ran 1920–1927
  2. Data-trust reviewYears: 1920–1930 → 1920–1927. SIG Bergmann 1920 production ran 1920–1927

All corrections · How corrections work

Historical context

MP 18 (base model shown for SIG Bergmann submachinegun (Japanese contract))
Shown: a German MP 18,I, not this Japanese-contract SIG Bergmann with bayonet lug.

Image: Wikimedia Commons, “Bergmann MP18.1.JPG” by Quickload at English Wikipedia (Original text: Edmond HUET (talk)), CC BY-SA 3.0. Retrieved October 2026.

Summary: Wikipedia, “MP 18”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The MP 18 is a German submachine gun designed and manufactured by Bergmann Waffenfabrik. Introduced into service in mid-1918 by the German Army during World War I, the MP 18 was intended for use as a short-range weapon for trench warfare that would provide individual soldiers with increased firepower over a pistol.