This replica is the famous BT 334 nuclear missile delivery vehicle. Designed around a nine 100 megaton nuclear missile launcher, it can obliterate a huge area. Normally used in a pattern of 3 x 3 square miles it could destroy large areas and exterminate any enemy not protected by shielding.
The missile have a long range (to 300 miles) and can be independently targeted as required. The vehicle is proof against hostile or irradiated atmosphere with its airlock entry point. Normally the crew carried are three, a driver, a missile operator and a commander. The vehicle has no secondary weapon system and generally is accompanied by a BT331 or similar vehicle as an escort.
The wheel system allows it to move over very difficult terrain with each double wheel pod being individually powered and steered, and can be jettisoned if damaged by a mine (or similar). The top speed is limited but the power from the double linked nuclear generators allows it almost unlimited range and very strong double linked shield system.
The official name is the "Grid Reaper", but in the field they are sometimes called a "Slam dunk".
Compared to the normal tanks produced at the same time, few of these were made, but when used they could unload an intense firepower on an enemy. Each missile was ten times the destructive power of a nuke cannon shell and three times the range. The missiles could also be independently targeted and their target changed inflight unlike the cannon shell.