Description
The barrel of the M-30 was of built-up construction and consisted of a liner, jacket and breech. The breechblock was of interrupted screw type, with forced cartridge case extraction. The gun was equipped with a hydraulic recoil buffer and hydropneumatic recuperator. A panoramic sight was used for both indirect and direct fire.
The M-30 had a modern split trail carriage with leaf spring suspension and steel wheels with rubber tires. It was usually towed by vehicle without a limber. The carriage allowed for a towing speed of up to 50 km/h on paved road and up to 35 km/h on gravel or dirt roads, although the gun could also be moved by a team of six horses, in which case a limber was used. When the trails were swung open the suspension locked automatically . In an emergency it was possible to shoot in a "single trail" mode, at the price of a drastically reduced traverse (1°30'). The time required to set the gun up for combat was about 1 — 1.5 minutes.
The carriage of the M-30 was later used for the D-1 152 mm howitzer.
Read more about this topic: 122 Mm Howitzer M1938 (M-30)
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