| Madsen 20 mm cannon | |
|---|---|
Madsen 20 mm cannon |
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| Type | Autocannon |
| Place of origin | Denmark |
| Service history | |
| Used by | Denmark Finland Ireland |
| Specifications | |
| Weight | 55 kilograms (120 lb) |
| Length | 2,500 millimetres (98 in) |
| Barrel length | 1,200 millimetres (47 in) |
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| Cartridge | 20 x 120 mm |
| Caliber | 20mm |
| Rate of fire | 350 rounds per minute |
| Muzzle velocity | 790 metres per second (2,600 ft/s) |
| Effective range | 500 metres (550 yd) |
| Maximum range | 1,800 metres (2,000 yd) |
| Feed system | Drum magazine |
| 20x120mm Madsen | ||
|---|---|---|
| Type | Autocannon | |
| Place of origin | Denmark | |
| Production history | ||
| Manufacturer | Kynoch | |
| Specifications | ||
| Rim diameter | 28.9mm[1] | |
20 mm AA Machine Cannon M/38 was produced by the Danish company Dansk Industri Syndikat (Danish Industry Syndicate) - maybe better known under the abbreviation DISA - in Herlev near Copenhagen and was used by the military of Denmark in different types of mounting. This cannon was originally constructed by Colonel V. H. O. Madsen and was therefore widely known as the 20 mm Madsen Cannon. A version with a necked-out 23 mm round was also produced, generally known as the 23 mm Madsen.
The mountings were also produced by DISA in the following types:
This type of machine cannon was a very well functioning weapon, which was exported by DISA to several countries.
20 mm machine cannon in side-car mounting was without doubt the weapons system that made the most remarkable contribution to the defence when Germany attacked Denmark in Operation Weserübung on the 9 April 1940.