Comparing: BT-7 artillery vs. T-46

In 1934–1935 the design bureau of the Kharkiv Locomotive Factory developed this artillery modification of the BT-7. The new elliptical turret was equipped with the 76.2-mm CT-28 gun. In addition, some vehicles received new radio stations. A total of 155 artillery BT-7s were manufactured. The vehicles saw combat on the Karelian Isthmus, in Manchuria, and during the first period of the Great Patriotic War.

Developed under the program for improving the maneuverability of the T-26 light tank through redesigning its chassis to a wheeled caterpillar type. The prototype was built in 1935. The vehicle saw service on February 29, 1936 after a series of modifications. At least four vehicles from the experimental batch underwent trials in 1937, but the production was discontinued due to transmission faults and high cost. The manufactured vehicles were used during the Winter War and World War II.