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 · 008

Azul selective-fire pistol

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. 82 ↗

Azul, selective fire pistol, cal. 7.63mm (.30 Mauser), copy of Mauser Model 1896 pistol.

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

What this entry requires

  • INFOATF states no date; production was about 1931–1936.
  • INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).

Editorial facts · Our research

Country
Spain⁴
Manufacturer
Eulogio Arostegui, Eibar²
Type
Pistol¹
Action
Select-fire / auto
Caliber
7.63mm Mauser
Made
c. 1931–1936production; ATF states no date³
Service
Commercial
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section IV · PDF p. 82 ↗ · 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, “Mauser C96” ↗, type: Spanish makers began producing select-fire C96 copies in 1927–1928
  2. catalogacionarmas.com ↗, maker: Juan L. Calvó, Spanish Short Weapons 1875-1950s, part 3 ch. 11: the SUPER AZUL "Mauser-type" pistols, "a brand derived from the AZUL brand registered in 1922 by Eulogio Arostegui"; often taken for a Beistegui Hermanos product marketed by Arostegui, "However, Artemio Mortera tells us that it was exactly the other way around": Arostegui built them and Beistegui marketed them (the Mauser C96 article gives the older Beistegui attribution)
  3. catalogacionarmas.com ↗, years (estimate: partly supports it): the Super Azul was "Also marketed under the MM31 trademark" (MM 31 = "Modelo Militar 1931", trademark registered by Beistegui in 1932); no production span is stated, so start 1931 is the model year and the 1936 end is our estimate
  4. catalogacionarmas.com ↗, country: made in Eibar, Spain, by Eulogio Arostegui's workshop (founded by Salvador Arostegui in 1908)
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. Evidence passEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.
  2. Evidence passYears: 1930–1936 → 1931–1936. The Super Azul is marked with the MM 31 (Modelo Militar 1931) trademark (Calvó), so 1930 predates its first possible year

All corrections · How corrections work

Historical context

Mauser C96 (base model shown for Azul selective-fire pistol)
Shown: a Mauser C96, not this Spanish-made Azul copy.

Image: Wikimedia Commons, “Mauser C96 7,63 (6971794467).jpg” by Askild Antonsen, CC BY 2.0. Retrieved October 2026.

Summary: Wikipedia, “Mauser C96”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Mauser C96 is a semi-automatic pistol that was originally produced by German arms manufacturer Mauser from 1896 to 1937. Unlicensed copies of the gun were also manufactured in Spain and China in the first half of the 20th century.