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 · 079

MG 81 & MG 81Z aircraft machineguns

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. 84 ↗

German, cal. 8mm MG 81 and MG 81Z Aircraft Machineguns.

ATF lists cal. 8mm; this is the 7.92×57mm Mauser cartridge.

What this entry requires

  • INFOATF states no date; production was about 1940–1945.
  • INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).

Editorial facts · Our research

Country
GermanyBasis: the ATF wording
Manufacturer
Mauser-WerkeBasis: outside reference ¹
Type
MachinegunBasis: the ATF wording
Action
Select-fire / autoBasis: the ATF wording
Caliber
7.92×57mmBasis: the ATF wording
Made
1940–1945production; ATF states no dateBasis: outside reference ²
Service
Military

Source

Official wording
ATF P 5300.11, April 2025 edition · Section IV · PDF p. 84 ↗ · 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. 1. Wikipedia, “MG 81” ↗, maker: infobox Entwickler / Hersteller: Mauser Werke (Oberndorf)
  2. 2. Wikipedia, “MG 81 machine gun” ↗, years: 'Developed in 1938/1939, it was in production from 1940 to 1945' (German Wikipedia: Produktionsstart 1940, Produktionsende 1945)
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

Correction history

  1. Evidence passYears: 1939–1945 → 1940–1945. Wikipedia (en, de): production 1940–1945

All corrections · How corrections work

Historical context

MG 81 & MG 81Z aircraft machineguns

Image: Wikimedia Commons, “MG 81.JPG” by Kogo, CC BY-SA 3.0. Retrieved October 2026.

Summary: Wikipedia, “MG 81 machine gun”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The MG 81 is a German belt fed 7.92×57mm Mauser machine gun which was used in flexible installations in World War II Luftwaffe aircraft, in which capacity it replaced the older drum magazine-fed MG 15.