| Year | 1938 |
| Weapon Type | Light Anti-Aircraft Gun |
| Origin & Designer | Germany/Rheinmetall |
| Numbers Produced | 300 |
| Crew | 5 |
| Calibre | 20mm (20x138) |
| Elevation | -20° to +90° |
| Traverse | 360° |
| Breech | [@breech] |
| Recoil | [@recoil] |
| Gun Sight | Flakviser 38 |
| Gun Mount | Cradle / Triangular Platform |
| Carriage | Sd. Ah. 51 Two Wheeled Carriage |
| Trailers | [@trailers] |
| Gun Shield | 5mm |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 1.300mm (L/65) |
| Overall Length | 4.08m |
| Width | 1.81m |
| Height | 1.60m |
| Weight | Weight in Traction: 751 kg Weight in Action: 405 kg |
| Round Weight | 0.136 kg (HE) |
| Muzzle Velocity | 888 m/s |
| Feed | 20 Round Box Magazine |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | 180 r.p.m. |
| Rate of Fire | [@rate_of_fire] |
| Maximum Rate of Fire | 450 r.p.m. |
| Maximum Ceiling | 2.134m |
| Maximum Ground Range | 2.697m |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Traction | Motorized |
| Variants | [@variants] |
| Notes | The 20mm model 38 was a German import which was originally built by Gustloff. |