MK19 grenade launcher
E929874
The MK19 grenade launcher is a belt-fed, automatic 40mm weapon system used by the U.S. military to deliver high-explosive fire against personnel, light vehicles, and fortifications at medium ranges.
All labels observed (5)
| Label | Occurrences |
|---|---|
| 40 mm Mk 19 automatic grenade launcher | 1 |
| MK19 40 mm automatic grenade launcher | 1 |
| MK19 Mod 3 | 1 |
| MK19 automatic grenade launchers | 1 |
| MK19 grenade launcher canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11507429 — 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: MK19 grenade launcher Context triple: [2nd Battalion, 8th Marines, supportWeapon, MK19 grenade launcher]
-
A.
HK69 grenade launcher
The HK69 grenade launcher is a German-made, single-shot, break-action 40mm weapon designed by Heckler & Koch for infantry use in launching explosive and less-lethal munitions.
-
B.
M203 40 mm grenade launcher
The M203 40 mm grenade launcher is a single-shot, under-barrel weapon system designed to attach to rifles and provide infantry with enhanced explosive firepower for close support and area suppression.
-
C.
G3 battle rifle
The G3 battle rifle is a widely used 7.62×51mm NATO select-fire rifle developed in the 1950s and adopted by numerous armed forces around the world.
-
D.
RPK light machine gun
The RPK light machine gun is a Soviet-designed, Kalashnikov-pattern squad automatic weapon developed as a durable, magazine-fed support firearm for infantry units.
-
E.
Beryl assault rifle
The Beryl assault rifle is a Polish-designed 5.56×45mm NATO service rifle widely used as the primary infantry weapon of Poland’s armed forces.
- 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: MK19 grenade launcher Target entity description: The MK19 grenade launcher is a belt-fed, automatic 40mm weapon system used by the U.S. military to deliver high-explosive fire against personnel, light vehicles, and fortifications at medium ranges.
-
A.
HK69 grenade launcher
The HK69 grenade launcher is a German-made, single-shot, break-action 40mm weapon designed by Heckler & Koch for infantry use in launching explosive and less-lethal munitions.
-
B.
M203 40 mm grenade launcher
The M203 40 mm grenade launcher is a single-shot, under-barrel weapon system designed to attach to rifles and provide infantry with enhanced explosive firepower for close support and area suppression.
-
C.
G3 battle rifle
The G3 battle rifle is a widely used 7.62×51mm NATO select-fire rifle developed in the 1950s and adopted by numerous armed forces around the world.
-
D.
RPK light machine gun
The RPK light machine gun is a Soviet-designed, Kalashnikov-pattern squad automatic weapon developed as a durable, magazine-fed support firearm for infantry units.
-
E.
Beryl assault rifle
The Beryl assault rifle is a Polish-designed 5.56×45mm NATO service rifle widely used as the primary infantry weapon of Poland’s armed forces.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
automatic grenade launcher
ⓘ
belt-fed weapon ⓘ crew-served weapon ⓘ |
| ammunitionType | 40×53mm high-velocity grenade ⓘ |
| caliber | 40 mm ⓘ |
| canUseAmmunition |
high-explosive (HE) grenades
ⓘ
high-explosive dual-purpose (HEDP) grenades ⓘ training practice grenades ⓘ |
| category | U.S. military weapon system ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crew | typically three personnel ⓘ |
| designedFor |
engaging fortifications
ⓘ
engaging light armored vehicles ⓘ engaging personnel ⓘ |
| effectiveRange |
about 1500 meters against area targets
ⓘ
about 350 meters against point targets ⓘ |
| enteredService | early 1970s ⓘ |
| feedSystem | belt-fed ⓘ |
| firingMode | fully automatic ⓘ |
| introduced | late 1960s ⓘ |
| length | approximately 109.5 centimeters ⓘ |
| manufacturer |
General Dynamics Ordnance and Tactical Systems
ⓘ
linked to:
General Dynamics
Saco Defense ⓘ |
| maximumRange | about 2212 meters ⓘ |
| mountingOptions |
naval mount
ⓘ
tripod mount ⓘ vehicle mount ⓘ |
| muzzleVelocity | approximately 240 meters per second ⓘ |
| notableFeature |
ability to defeat light armor
ⓘ
airburst fragmentation effect ⓘ area suppression capability ⓘ |
| operation | blowback-operated ⓘ |
| rateOfFire | about 325 to 375 rounds per minute cyclic ⓘ |
| safetyFeature | firing pin does not protrude until bolt is fully forward ⓘ |
| sightType |
iron sights
ⓘ
leaf sight ⓘ |
| standardTripod | M3 tripod ⓘ |
| standardUSDesignation |
MK19 Mod 3
ⓘ
linked to:
MK19 grenade launcher
|
| usedBy |
United States Air Force
ⓘ
United States Army ⓘ United States Coast Guard ⓘ United States Marine Corps ⓘ United States Navy ⓘ various NATO forces ⓘ |
| usedInConflict |
Gulf War
ⓘ
Iraq War ⓘ Vietnam War (late stages) ⓘ War in Afghanistan (2001–2021) ⓘ |
| weight | approximately 35.3 kilograms unloaded ⓘ |
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: MK19 grenade launcher Description of subject: The MK19 grenade launcher is a belt-fed, automatic 40mm weapon system used by the U.S. military to deliver high-explosive fire against personnel, light vehicles, and fortifications at medium ranges.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: MK19 grenade launcher
linked to: MK19 grenade launcher
linked to: MK19 grenade launcher
linked to: MK19 grenade launcher