Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the anti-aircraft artillery (aaa) category.
01 / Overview
Oerlikon 20 mm cannon
Category
Country
Prime contractor
Production
1940–1995
Quantity
124,734
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
ANTI-AIRCRAFT ARTILLERY (AAA) · WORLD WAR II
13
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the anti-aircraft artillery (aaa) category, regardless of era.
02 / Specs & Design
◎General5MOD.5
- Service Entry Year1937
- Combat Weight182 kg
- Travel Weight92 kg
- Crew2
- In ServiceYes
◈Ordnance4MOD.4
- Calibre20 mm
- Barrel Length (calibres)70
- Muzzle BrakeNo
- Bore EvacuatorNo
▣Performance7MOD.7
- Minimum Range0 km
- Maximum Range (standard)4.389 km
- Muzzle Velocity820 m/s
- Rate of Fire (burst)70
- Rate of Fire (sustained)285
- Elevation-15° to +90°
- TraverseManual, full 360°
◇Ammunition8MOD.8
- Projectile Weight0.127 kg
- Ammunition TypesHE, HE/T
- HE RoundYes
- Smoke RoundNo
- Illumination RoundNo
- Cluster / DPICMNo
- Precision-Guided RoundNo
- MRSI CapableNo
◆Fire Control5MOD.5
▤Mobility4MOD.4
- Self-PropelledNo
- Shoot-and-ScootNo
- AutoloaderNo
- Protected Crew CabNo
⬢Ammunition Handling2MOD.2
- Ready Rounds60
- Total Rounds Carried200
▲Dimensions1MOD.1
- Length2.21 m
◎Production2MOD.2
- Total Production124,734
- Production Start1,937 year
◈Self-Propelled Chassis1MOD.1
03 / History
SERVICE LIFESPANStill in Service
- 1939First deployment: World War II
- 1940Production started
- 1995Production ended
86
years in service
55
years in production
124,734
units produced
2
countries operating
ⓘ The producing country still actively operates it. 13 countries retired it.
04 / Variants
▚ WEAPON FAMILY
05 / Operators
Operator Countries15country
06 / MASS Score
ANTI-AIRCRAFT ARTILLERY (AAA) RANKING Anti-Aircraft Artillery (AAA) · World War II
MASS RANKINGSMASS ↗
90ANTI-AIRCRAFT ARTILLERY (AAA)13WORLD WAR II · ANTI-AIRCRAFT ARTILLERY (AAA)52SWITZERLAND · ALL WEAPONS9PERFORMANCE/PRICE · ANTI-AIRCRAFT ARTILLERY (AAA)
ⓘ Rankings are within theAnti-Aircraft Artillery (AAA)category.
📖 TERMS ON THIS PAGE1terms
High Explosive (HE) round: an artillery or mortar projectile containing explosive filler designed to inflict damage through blast and fragmentation effects.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources