FMB 46M Tjván

'''Strojní Zařízení Břetislav, Střední Tank Vz. 46 (Inventory designation: Střední Tank, Vz. 46''').

Variants
The ST Vz.46 saw many variants and upgrades due to its long service life around the world. The Modrovian official upgrades and variants for the vehicle were:
 * Strojní Zařízení Břetislav, Střední Tank Vz. 46(1946) - Stopgap production model, still featuring a hull model, and an older high power 75mm gun. This version featured an older engine which was prone to fires and had low range, it also featured thinner armour in a bid to lower the weight as a means to achieve minimum mobility requirements. This model was released due to delays to the development of key systems in the vehicle.
 * Strojní Zařízení Břetislav, Střední Tank Vz. 46. A(1948) - The original planned production model, featured the appropriate engine and 90mm gun originally intended to be mounted on the vehicle, it featured 20mm of additonal armour plating on all parts of the vehicle.
 * Strojní Zařízení Břetislav, Střední Tank Vz. 46. B(1952) - Featured a new engine upgrade as well as the introduction of infrared lamps for night operations. The cupola also received a machine-gun mount due to requests from Modrovian and foreign tank commanders alike.
 * Strojní Zařízení Břetislav, Střední Tank Vz. 46. D(1955) - Featured a new 105mm gun with centre aligned bore evacuator and no muzzle break, as well as the addition of 15mm of armour to the frontal arc of the turret and upper glacis. Featured an effective single plane vertical stabiliser, also updated the IR lamp to a more effective model, as well as a new smoke dispensers.
 * Strojní Zařízení Břetislav, Střední Tank Vz. 46. E(1968) - Featured the addition of a new fire control system with automatic lead prediction and passive thermal imaging removing the need for IR lamps. Utilised a domestic Modrovian laser range finder. Featured a two plane, vertical and horizontal stabiliser.

Current Users

 * Kodeshia -
 * South Veikaia -
 * SiWallqanqa -
 * Pukara -
 * Republika Akhalia -
 * Kartvelian Tributary State -
 * Slivensk Republic -

Former Users

 * Modrovia -
 * Gardarike -
 * Veikan Kingdom -
 * Legantus -
 * Mero-Curgovina -