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 · III · 044

Walther Leuchtpistole, with 23mm adapter sleeve

Section III: removed from the NFA, curio or relic under the GCA

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION III · VERBATIM · PDF P. 24 ↗

German, Leuchtpistole, cal. 26.7mm, Walther pattern, mfd. in or before 1945, with original 23mm rifled grenade launching adapter sleeve.

The 23mm figure is the bore of the rifled grenade-launching adapter sleeve, not a chambering; the pistol is 26.7mm (4 gauge).

What this entry requires

  • ATF REQUIRESOriginal as the ATF wording requires: “with original 23mm rifled grenade launching adapter sleeve”
  • ATF REQUIRESMade 1945 or earlier (ATF’s dates)ATF: “mfd. in or before 1945”

Editorial facts · Our research

Country
Germany
Manufacturer
Carl Walther and others¹
Type
Pistol³
Action
Other
Caliber
26.7mm
Made
1945 or earlier
Service
Military
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section III · PDF p. 24 ↗ · 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, “Leuchtpistole 34” ↗, maker: Walther design, successor to the Leuchtpistole 26
  2. Wikipedia, “Leuchtpistole 34” ↗, service: German service before and throughout WWII
  3. Wikipedia, “Leuchtpistole 34” ↗, type
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. Data-trust reviewEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.

All corrections · How corrections work

Historical context

Leuchtpistole 34 (base model shown for Walther Leuchtpistole, with 23mm adapter sleeve)
Shown: a German wartime flare pistol, not this Leuchtpistole with its 23mm grenade adapter sleeve.

Image: Wikimedia Commons, “Flare pistol, U-505, World War II - Museum of Science and Industry (Chicago) - DSC06765.JPG” by Daderot, CC0. Retrieved October 2026.

Summary: Wikipedia, “Leuchtpistole 34”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Leuchtpistole 34 or flare gun in English was introduced into German service before World War II and served throughout World War II.