The SU-122 (from Samokhodnaya Ustanovka 122 mm) was a Soviet self-propelled howitzer or assault gun used during World War II. The number "122" in the designation represents the caliber of the main armament, a 122 mm M-30S howitzer .

The SU-122 was the first major variant of the successful T-34 chassis. After the first German Sturmgeschütz assault guns were seen in operations, an order was issued in April 1942 to several design bureaus to devise plans for a prototype SPG.

Jan 8, 2018 · Detailing the technical specifications, development, and operational history of the Su-122 Self-Propelled Gun (SPG) including pictures.

The SU-122 was the first self-propelled mounting based on the T-34 chassis to enter service with the Red Army. Originally developed to provide general close support for tanks and infantry, the SU-122 also proved to be an effective tank destroyer.

Jun 18, 2014 · The crew of the 122 mm SPG D25-SU-122P consists of 4 crewmen: commander, gunner, loader, and mechanic-driver. A more detailed review of the fighting compartment exists as a GAKP report #0583 from February 10th, 1945.

Assault gun SU-122 was produced at Ural Heavy Machinery Factory (UZTM) in Sverdlovsk from the end of December 1942 till August 1943 with 640 units built in total. It used Т-34-76 tank chassis, but the crew compartment has been completely rebuilt and the original turret was replaced with 122 mm M-30S howitzer.

Aug 3, 2009 · The SU-122 is probably the best value vehicle for supporting a Strelkovy battalion, it has good high explosive (FP2+), excellent range (32”/80cm) and good anti-tank (AT10). It also has good armour (F5 S5 T1), though it would pay not to expose it to too much fire.

The SU-122 Assault Gun had a 122mm main gun & used a Russian T-34 tank chassis. It provided fire support for the infantry & doubled up as a tank destroyer.

GENERAL DATA; Formal Desig­nation: SU-122: Manufac­turer(s) Factory No.9 Ural Heavy Machinery Factory (UTZM or Uralmash) Production Quantity: 1148: Production Period

This new fourth volume of The Red Machines Serie describes the development and service of the SU-122 Assault Gun. The SU-122 development story was particularly nuanced. The development path which ultimately resulted in the SU-122 began with a series of turreted T-34 based tank destroyer designs that did not progress beyond project stage.