The Oerlikon 20 mm cannon is a series of autocannons based on an original German Becker Type M2 20 mm cannon design that appeared very early in World...

mm NATO Oerlikon Searanger: Oerlikon Searanger 20, calibre 20×128 mm Oerlikon Searanger 25, calibre 25×137 mm Oerlikon Seasnake: Oerlikon Seasnake 20...

the original Oerlikon 20 mm cannon, in turn based on the German Empire's Becker 20 mm cannon of World War I. In the post-war period, Oerlikon had developed...

war. The Becker also served as the pattern for the famous Swiss-built Oerlikon 20 mm cannon, which is in service to this day, and in a later form, was the...

The Oerlikon GDF or Oerlikon 35 mm twin cannon is a towed anti-aircraft gun made by Oerlikon Contraves (renamed as Rheinmetall Air Defence AG following...

Polish development of the 20 mm Oerlikon gun. The Polsten was designed to be simpler and much cheaper to build than the Oerlikon, without reducing effectiveness...

new round was one of two post-WWII European 20 mm designs, the other being the 20×128 developed by Oerlikon for a similar role. The HS.820's high 1,100 m/s...

Rheinmetall Oerlikon Millennium Gun or Rheinmetall GDM-008 is a close-in weapon system designed by Rheinmetall Air Defence AG (formerly known as Oerlikon Contraves)...

Zürich Oerlikon Oerlikon KBA, a 25 mm cannon Oerlikon 20 mm cannon, an anti-aircraft cannon Oerlikon 35 mm twin cannon, an anti-aircraft cannon Oerlikon (Zürich)...

Elizabeth and HMS Prince of Wales, but as of 2021 had not been fitted. The Oerlikon 20 mm (0.79 in) cannon can be found on the Albion-class landing platform docks...