GAU-12 Equalizer 25 mm cannon
E98228
The GAU-12 Equalizer is a five-barrel 25 mm Gatling-type rotary cannon used primarily by U.S. military aircraft for high-rate, close air support and ground-attack missions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| GAU-12 Equalizer 25 mm cannon canonical | 1 |
| GAU-12/U 25 mm Gatling gun | 1 |
| GPU-5/A gun pod | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T822167 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: GAU-12 Equalizer 25 mm cannon Context triple: [AV-8B Harrier II, armamentOption, GAU-12 Equalizer 25 mm cannon]
-
A.
40 mm Bofors autocannon
The 40 mm Bofors autocannon is a widely used, rapid-firing anti-aircraft and multi-purpose gun system renowned for its reliability and effectiveness since World War II.
-
B.
AGM-114 Hellfire
The AGM-114 Hellfire is a U.S.-developed air-to-surface precision-guided missile widely used from helicopters, drones, and fixed-wing aircraft for anti-armor and strike missions.
-
C.
Mauser BK-27 27 mm cannon
The Mauser BK-27 is a German-designed 27 mm revolver cannon widely used in modern fighter aircraft for high-rate, accurate air-to-air and air-to-ground fire.
-
D.
7.62 mm M240 machine gun
The 7.62 mm M240 machine gun is a belt-fed, gas-operated general-purpose machine gun widely used by U.S. and NATO forces for infantry support and as a mounted weapon on vehicles and aircraft.
-
E.
GIAT 30M 30 mm cannon
The GIAT 30M 30 mm cannon is a French single-barrel, revolver-type aircraft autocannon known for its high rate of fire and use on modern fighter jets such as the Dassault Rafale.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: GAU-12 Equalizer 25 mm cannon Target entity description: The GAU-12 Equalizer is a five-barrel 25 mm Gatling-type rotary cannon used primarily by U.S. military aircraft for high-rate, close air support and ground-attack missions.
-
A.
40 mm Bofors autocannon
The 40 mm Bofors autocannon is a widely used, rapid-firing anti-aircraft and multi-purpose gun system renowned for its reliability and effectiveness since World War II.
-
B.
AGM-114 Hellfire
The AGM-114 Hellfire is a U.S.-developed air-to-surface precision-guided missile widely used from helicopters, drones, and fixed-wing aircraft for anti-armor and strike missions.
-
C.
Mauser BK-27 27 mm cannon
The Mauser BK-27 is a German-designed 27 mm revolver cannon widely used in modern fighter aircraft for high-rate, accurate air-to-air and air-to-ground fire.
-
D.
7.62 mm M240 machine gun
The 7.62 mm M240 machine gun is a belt-fed, gas-operated general-purpose machine gun widely used by U.S. and NATO forces for infantry support and as a mounted weapon on vehicles and aircraft.
-
E.
GIAT 30M 30 mm cannon
The GIAT 30M 30 mm cannon is a French single-barrel, revolver-type aircraft autocannon known for its high rate of fire and use on modern fighter jets such as the Dassault Rafale.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Gatling-type autocannon
ⓘ
rotary cannon ⓘ |
| ammunitionType |
25×137 mm
ⓘ
SAPHEI ⓘ armor-piercing incendiary ⓘ high-explosive incendiary ⓘ |
| barrelConfiguration | rotating cluster ⓘ |
| caliber | 25 mm ⓘ |
| conflictUsedIn |
Gulf War
ⓘ
Iraq War ⓘ War in Afghanistan (2001–2021) ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designedFor | aircraft armament ⓘ |
| designedForTarget |
armored vehicles
ⓘ
lightly armored targets ⓘ soft ground targets ⓘ |
| developmentStart | 1970s ⓘ |
| enteredService | early 1980s ⓘ |
| feature |
Gatling rotating-barrel mechanism
ⓘ
high rate of fire ⓘ high reliability ⓘ |
| feedSystem | linkless feed system ⓘ |
| hasVariant |
GAU-12 Equalizer 25 mm cannon
self-linksurface differs
ⓘ
surface form:
GPU-5/A gun pod
|
| manufacturer | General Dynamics ⓘ |
| mounting |
side-fuselage sponson pods on Harrier variants
ⓘ
ventral gun pod for AV-8B Harrier II ⓘ |
| natoCaliberClass | medium-caliber autocannon ⓘ |
| nomenclature | GAU-12/U ⓘ |
| numberOfBarrels | 5 ⓘ |
| operation |
electrically controlled
ⓘ
hydraulically driven ⓘ |
| platform |
AC-130 gunship
ⓘ
surface form:
AC-130U Spooky gunship
AV-8B Harrier II ⓘ Hawker Siddeley Harrier ⓘ
surface form:
Harrier GR7
Hawker Siddeley Harrier ⓘ
surface form:
Harrier GR9
LAV-AD ⓘ
surface form:
LAV-AD air-defense vehicle
|
| primaryRole |
close air support
ⓘ
ground-attack ⓘ |
| rateOfFire | approximately 3,600 rounds per minute ⓘ |
| relatedWeapon |
GAU-22/A
ⓘ
GAU-8 Avenger ⓘ |
| usedBy |
Aeronautica Militare
ⓘ
surface form:
Italian Air Force
Royal Air Force ⓘ United States Air Force ⓘ United States Marine Corps ⓘ |
| usedFor |
air interdiction
ⓘ
armed reconnaissance ⓘ defensive fire support ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: GAU-12 Equalizer 25 mm cannon Description of subject: The GAU-12 Equalizer is a five-barrel 25 mm Gatling-type rotary cannon used primarily by U.S. military aircraft for high-rate, close air support and ground-attack missions.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
GAU-12 Equalizer 25 mm cannon
→
hasVariant
→
GAU-12 Equalizer 25 mm cannon
self-linksurface differs
ⓘ
subject surface form:
GAU-12 Equalizer
this entity surface form:
GPU-5/A gun pod