This equipment consists of the four-barrelled 2 cm (.79 in.) antiaircraft gun mounted on the Pz. Kpfw. IV chassis. The gun has been mounted in an open topped, nine-sided turret. Elevation is from 10° to 90° and traverse is 360°.
The gun is the normal 2 cm Flakvierling 38 with the triangular base removed. Two guns are mounted on either side of the cradle. The guns are fired by a set of foot pedals; each pedal operates the trigger mechanism of the two diametrically opposite guns. The weapon is traversed and elevated manually by the gunner who also aims and fires it.
The 2 cm Flakvierling 38 is supported by two four-inch I-beams which are located 15 inches below the normal tank turret ring. The I-beams are in the center below the turret opening and extend across the width of the tank chassis.
There is no traversing rack on the turret ring. A rod from the gun upper carriage supports the gunner’s seat and is fastened by a U-bolt to the turret to form a connection between the gun mount and the turret armor. At the front of each side of the upper carriage is a collapsible rod which also can be fastened to the turret armor. In this manner, the gun mount and turret traverse together.
The turret is 43 inches high, 6 feet, 6 inches wide, and 8 feet long. The armor plate is 15 mm thick. Each side of the turret is composed of two plates of equal dimensions welded together. The top plates are sloped at an angle of approximately 30 degrees and the bottom plates are undercut at the same angle.
SPECIFICATIONS
| Weight | 26 tons (estimated) | |
| Length | 19 ft., 4 ins. | |
| Width | 9 ft., 8 ins. | |
| Height | 9 ft. | |
| Ground clearance | 15 ins. | |
| Tread centers | 7 ft., 10 7/8 ins. | |
| Ground contact | 11 ft., 6 ins. | |
| Width of track | 15 ins. | |
| Pitch of track | 4 3/4 ins. | |
| Track links | 98 | |
| Fording depth | 3 ft. | |
| Theoretical radius of action: | ||
| Roads | 130 miles | |
| Cross country | 80 miles | |
| Speed: | ||
| Roads | 25 m.p.h. | |
| Cross country | 15 m.p.h. | |
| Armor: | ||
| Front plate of superstructure | 85 mm at 10° to vertical | |
| Sides of superstructure | 30 mm | |
| Armament | 2 cm Flakvierling 38 | |
| Ammunition | H.E. Shell, tracer; H.E.-Incendiary; A.P. shell, tracer. | |
| Rounds | 16 clips in turret (20 rds in each); 15 boxes in tank. | |
| Engine | Maybach HL 120 TRM, 320 hp. | |
| Transmission | Synchromesh—6 speeds forward, 1 reverse | |
| Steering | Epicylic, clutch brake | |
| Crew | 5 |
German: p. 34.1 (August 1, 1945)