A U.S. SPG developed in 1945 on the basis of the T26E3 for destroying bunkers and underground hideouts on islands of the Pacific. Five vehicles were built, including the experimental one. The project was discontinued when the war ended.
Time for the successive autoreloading of each shell into the magazine.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.