20-mm Polsten Anti Aircraft Gun

Polsten Mk I

 

Calibre - 20mm

Barrel length - 2178mm

Weight - 54,9kg

Traverse - 360

Elevation - -5 to +85

Muzzle velocity - 831m/sec

Effective range - 2021m

Rate of fire - 450 rpm

Shell weight - 0,119kg

Polsten was a simplified version of Oerlikon 20mm AA gun made by a group of Polish engineers.