The Object 120 SU-152 "Taran" (Russian: СУ-152 «Таран») was a fully enclosed Soviet tank destroyer built in 1965, which never progressed past the experimental stage.

The Soviets, therefore, began parallel research on several different anti-tank weapon systems, such as the development of new armour-piercing fin-stabilized discarding sabot and shaped charge ammunition for existing tank guns, new rifled and smoothbore tank guns with calibers ranging from 115 mm to 130 mm with anti-tank missiles.

In terms of firepower and mobility, it surpassed all foreign tank destroyers.

With an overall length of about 10 meters, it is the longest gun of any type ever installed in a fully enclosed armoured fighting vehicle.

Firing the 12.5 kg APFSDS shell with a maximum charge (10.7 kg), which gave it a muzzle velocity of 1,720 m/s, the M-69 "Taran" had an armor penetration of 290 mm of RHA at 90° at a range of 2,000 meters.