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 · 210

Stoner 63 & 63A machineguns, 1963–1970

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. 87 ↗

Stoner, Model 63 and 63A, machineguns, all variations, as originally mfd. from 1963 through 1970.

What this entry requires

  • ATF REQUIRESMade 1963–1970 (ATF’s dates)ATF: “originally mfd. from 1963 through 1970”
  • INFOStill an NFA firearm; only registered examples transfer, with ATF approval (26 U.S.C. 5812, 5861).

Editorial facts · Our research

Country
United StatesBasis: outside reference ¹
Manufacturer
Cadillac Gage & licenseesBasis: the ATF wording
Type
MachinegunBasis: the ATF wording
Action
Select-fire / autoBasis: the ATF wording
Caliber
5.56×45mmBasis: outside reference ²
Made
1963–1970Basis: the ATF wording
Service
Military

Source

Official wording
ATF P 5300.11, April 2025 edition · Section IV · PDF p. 87 ↗ · 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, “Stoner 63” ↗, country: infobox origin United States
  2. 2. Wikipedia, “Stoner 63” ↗, calibers: infobox cartridge 5.56×45mm NATO
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

Stoner 63 & 63A machineguns, 1963–1970

Image: Wikimedia Commons, “Stoner 63 Light machinegun, belt-fed.png” by Advanced Research Projects Agency, Public domain. Retrieved October 2026.

Summary: Wikipedia, “Stoner 63”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Stoner 63 is a 5.56×45mm NATO modular weapon system. Using a variety of modular components, it can be configured as an assault rifle, carbine, top-fed light machine gun, belt-fed squad automatic weapon, or as a vehicle mounted weapon. Also known as the M63, XM22, XM23, XM207 or the Mk 23 MOD 0 machine gun, it was designed by Eugene Stoner in the early 1960s. Cadillac Gage was the primary manufacturer of the Stoner 63 during its history. The Stoner 63 saw very limited combat use by US military units during the Vietnam War. A few were also sold to law enforcement agencies.