C&R · IIIA · 042

Tribuzio squeezer pistol

Section IIIA: removed from the NFA, classed as an antique (outside the GCA)

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION IIIA · VERBATIM · PDF P. 80 ↗

Tribuzio, "Squeezer" invented by Catello Tribuzio of Turin, Italy, cal. 8mm short.

Official wording

ATF P 5300.11, April 2025 edition · Section IIIA · PDF p. 80 ↗ · 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. patents.google.com ↗, type: US Patent 461,968 (Catello Tribuzio, granted 1891-10-27): "especially to a pocket-pistol provided with a magazine"
2. forgottenweapons.com ↗, action: Forgotten Weapons (filed under Manual Repeater): ring-trigger palm squeezer whose ejector doubles as the sear; a manually operated squeeze repeater, action Other
3. forgottenweapons.com ↗, years (estimate: partly supports it): "designed by Catello Tribuzio... of Turin around 1890"; the 1898 end is the Section the Section IIIA date limit (1898)
4. patents.google.com ↗, country: patent: "CATELLO TRIBUZIO, OF TURIN, ITALY. MAGAZINE-PISTOL", "a subject of the King of Italy, residing at Turin"

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

18 October 2026Evidence passEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.

Image: U.S. Patent 461,968, “Magazine-pistol, sheet 1” by Catello Tribuzio, Public domain (US patent). Retrieved October 2026.