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 · 219

Type 4 Naval handgun

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. 64 ↗

Yokosuka Naval Arsenal, Type 4 Naval handgun, a double-barrel, smooth bore pistol, in cal. 20mm/12 gauge, produced for the Imperial Japanese Navy in 1944/45.

What this entry requires

  • ATF REQUIRESMade or imported as stated: “produced for the Imperial Japanese Navy in 1944/45”
  • ATF REQUIRESMade 1944–1945 (ATF’s dates)ATF: “in 1944”

Editorial facts · Our research

Country
JapanBasis: no citation
Manufacturer
Yokosuka Naval ArsenalBasis: the ATF wording
Type
PistolBasis: the ATF wording
Action
OtherBasis: no citation
Caliber
20mm/12 gaugeBasis: the ATF wording
Made
1944–1945Basis: the ATF wording
Service
Military

Source

Official wording
ATF P 5300.11, April 2025 edition · Section III · PDF p. 64 ↗ · 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
None attached yet
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
None

Historical context

NO VERIFIED IMAGE AVAILABLEWe show only freely licensed images verified to depict this model. None has been found yet.