American Anti Aircraft Weapons of World War II

American anti-aircraft weapon of World War II :
Anti-Aircraft Machine Cannons –
M45 Quadmount ( Meat Chopper or Krautmower ) – https://en.wikipedia.org/wiki/M45_Quadmount
Chicago Piano ( 28mm 1.1″ / 75 Caliber ) Machine Cannon – https://en.wikipedia.org/wiki/1.1%22/75_caliber_gun
Oerlikon 20mm Naval Auto-Cannon –
37mm Gun M1 – https://en.wikipedia.org/wiki/37_mm_Gun_M1
40mm M1 ( American Copy of Bofors L/60 AA Gun ) – https://en.wikipedia.org/wiki/Bofors_40_mm_gun#U.S._versions
Anti-Aircraft Artillery Cannons
Mark 10 – 20 ( 3″/50 Caliber Nava Gun ) – https://en.wikipedia.org/wiki/3%22/50_caliber_gun
M1917 ( 3-inch Anti-Aircraft Gun Model 1917 ) –
M1918 ( 3-inch Anti-Aircraft Gun Model 1918 ) – https://en.wikipedia.org/wiki/3-inch_Gun_M1918
M3 ( 3-inch Anti-Aircraft Gun Model 1927 ) – https://en.wikipedia.org/wiki/3-inch_anti-aircraft_gun_M3
4-inch 50 caliber Mark 9 gun (US)
5-inch 51 caliber Mark 8 gun (US)
90mm Gun M1/M2/M3 Anti-Aircraft Gun – https://en.wikipedia.org/wiki/90_mm_Gun_M1/M2/M3
120mm Stratosphere Gun M –
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