Cd. 508mm Gun M1913 (20-inch gun)
A Russian-designed gun modernized by the Soviet Union for use in World War II. It was primarily used as a coastal defense gun and in siege operations.
Cc. 508mm Gun, Model 1913 (20-inch gun)
A massive Russian coastal defense gun that was used by the Soviet Union during World War II. It was designed to protect strategic ports and naval bases from enemy bombardment. Its immense size and firepower made it a formidable weapon.