EM-2 rifle
E719768
The EM-2 rifle was an experimental British bullpup assault rifle developed in the early Cold War era, notable for its advanced design and use of an intermediate cartridge.
All labels observed (1)
| Label | Occurrences |
|---|---|
| EM-2 rifle canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8131232 — 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: EM-2 rifle Context triple: [RSAF Enfield, designed, EM-2 rifle]
-
A.
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.
-
B.
K2 assault rifle
The K2 assault rifle is a South Korean 5.56×45mm NATO service rifle developed by Daewoo as the standard-issue firearm for the Republic of Korea Armed Forces.
-
C.
FAMAS assault rifle
The FAMAS assault rifle is a distinctive French bullpup 5.56×45mm NATO service rifle known for its high rate of fire and long use as the standard infantry weapon of France.
-
D.
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.
-
E.
K3 light machine gun
The K3 light machine gun is a South Korean 5.56×45mm NATO squad automatic weapon, similar in role to the FN Minimi, used as a standard support weapon by the Republic of Korea Army and other 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: EM-2 rifle Target entity description: The EM-2 rifle was an experimental British bullpup assault rifle developed in the early Cold War era, notable for its advanced design and use of an intermediate cartridge.
-
A.
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.
-
B.
K2 assault rifle
The K2 assault rifle is a South Korean 5.56×45mm NATO service rifle developed by Daewoo as the standard-issue firearm for the Republic of Korea Armed Forces.
-
C.
FAMAS assault rifle
The FAMAS assault rifle is a distinctive French bullpup 5.56×45mm NATO service rifle known for its high rate of fire and long use as the standard infantry weapon of France.
-
D.
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.
-
E.
K3 light machine gun
The K3 light machine gun is a South Korean 5.56×45mm NATO squad automatic weapon, similar in role to the FN Minimi, used as a standard support weapon by the Republic of Korea Army and other forces.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
assault rifle
ⓘ
bullpup rifle ⓘ experimental firearm ⓘ |
| action | gas-operated ⓘ |
| adoptedAs | Rifle, Automatic, Calibre .280, Number 9 Mark 1 ⓘ |
| adoptedBy | British Army ⓘ |
| adoptionYear | 1951 ⓘ |
| alsoKnownAs |
Janson rifle
ⓘ
Rifle, Automatic, Calibre .280, Number 9 Mark 1 ⓘ |
| caliber |
.280 inch
ⓘ
7 mm ⓘ |
| cartridge | .280 British ⓘ |
| cartridgeType | intermediate cartridge ⓘ |
| category |
British experimental weapons
ⓘ
Cold War small arms ⓘ |
| configuration | bullpup ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designedFor | infantry use ⓘ |
| designedIn | post–World War II period ⓘ |
| designer |
Kazimierz Januszewski
ⓘ
Stefan Kenneth Janson ⓘ |
| developer | United Kingdom ⓘ |
| developmentStart | late 1940s ⓘ |
| era | early Cold War ⓘ |
| feedSystem | detachable box magazine ⓘ |
| fireModes |
fully automatic
ⓘ
semi-automatic ⓘ |
| influenced | later British bullpup rifle concepts ⓘ |
| influencedBy | World War II small arms experience ⓘ |
| intendedRole | standard British service rifle ⓘ |
| magazineCapacity | 20-round magazine ⓘ |
| materialUse | wood and metal construction ⓘ |
| notableFeature |
advanced bullpup layout for its time
ⓘ
compact overall length with full-length barrel ⓘ standard optical sight as primary sighting system ⓘ use of intermediate .280 British cartridge ⓘ |
| operation | gas-operated, rotating bolt ⓘ |
| rateOfFire | approximately 450–600 rounds per minute ⓘ |
| reasonForNonAdoption | NATO ammunition standardization issues ⓘ |
| reasonForReplacement | NATO standardization on 7.62×51mm cartridge ⓘ |
| replacedBy | L1A1 Self-Loading Rifle ⓘ |
| selectFire | yes ⓘ |
| serviceStatus |
never mass-produced
ⓘ
not widely issued ⓘ |
| sightMagnification | approximately 1.5× ⓘ |
| sights |
fixed optical sight
ⓘ
integral optical sight ⓘ |
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: EM-2 rifle Description of subject: The EM-2 rifle was an experimental British bullpup assault rifle developed in the early Cold War era, notable for its advanced design and use of an intermediate cartridge.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.