The 10.5 cm Geb. H. 40, introduced into the German Army in 1942, is the companion piece to the 7.5 cm Geb. G. 36 described on page 118. Its design is basically the same as that of the 10.5 cm le. F. H. 18 (M). The weapon can be split into nine loads for transport.
The barrel, of monobloc construction, is fitted with a double baffle muzzle brake with wide side flanges; the breech mechanism is of the horizontal sliding block type. A hydraulic buffer is built into the cradle on which the barrel slides in recoil, and a hydro-pneumatic recuperator is mounted above the barrel.
The split trail carriage has trails of riveted box construction which are fitted with large detachable spades. It is mounted on wheels of cast light alloy with detachable rims and solid rubber tires. The wheels are mounted on stub axles fitted to the trail legs and remain parallel to the legs when they are opened. Internal expanding brakes, adjusted by a handwheel from the front, are fitted to both wheels. The traversing and elevating handwheels are located on the left and right sides of the carriage respectively.
There are two range drum scales: one in mils ranging from 0 to 1,250; the other in meters ranging from 0 to 1,500 for hollow charge ammunition and from 1,500 to 9,675 for high explosive shells, both with charge 6 in the lower register.
SPECIFICATIONS
| Caliber | 105 mm (4.14 ins.) | |
| Weight (traveling position) | ||
| Weight (firing position) | 3,660 lb. | |
| Length of piece | 10 ft., 4 ins. | |
| Length (firing position) | 18 ft., 6 ins. | |
| Height (traveling position) | ||
| Height (firing position) | 4 ft., 11 ins. | |
| Width (overall) | 4 ft., 6 ins. | |
| Width of trail spread | ||
| Length of bore | 9 ft., 5 ins. | |
| No. of grooves | 32 | |
| Width of grooves | ||
| Depth of grooves | ||
| Width of lands | ||
| Muzzle velocity | 1,870 f/s | |
| Max. range (horizontal) | 13,807 yds. (Chg. 7) | |
| Max. range (vertical) | ||
| Rate of fire | ||
| Traverse | 25°, 20′ left and right | |
| Elevation | 70° | |
| Depression | -4°, 47′ | |
| Length of recoil (variable) | 19.7 ins. to 49.2 ins. | |
| Ammunition | 10.5 cm F.H. Gr. Al. (32 lb.)* 10.5 cm F.H. Gr. 38 Al. 10.5 cm F.H. Gr. Buntrauch (32 lb.) 10.5 cm 39 rot HL/A and HL/B (25.8 lb.)–Chg. 6 only. 10.5 cm 39 rot AL/C |
*A star shell is also reported to be fired with Charge 6.
German: p. 108.2