A Shin Gunto sword, also known as a Type 98 Gunto, refers to a specific type of Japanese military sword that was used by the Imperial Japanese Army during World War II. It was developed as a replacement for the earlier Gunto swords (Type 94 and Type 95) and was in use from 1938 until the end of the war.

The Shin Gunto sword was designed to be a standardized military weapon with simplified construction and mass production in mind. It featured a number of distinct characteristics:

1. Blade: The blade of the Shin Gunto was typically around 66 centimeters (26 inches) long and had a slight curve. It was often machine-made, unlike traditional hand-forged Samurai swords.
2. Handle: The handle, known as the tsuka, was made of wood and wrapped with a synthetic material, usually rayon or leather. It was longer and straighter compared to the curved handles of traditional Samurai swords.
3. Hilt and Guard: The hilt, or tsuka, featured a circular or octagonal shape and was made of metal. The guard, or tsuba, was often a simple and utilitarian design, typically made of stamped metal.
4. Scabbard: The scabbard, or saya, was made of metal or wood, covered with a black lacquer finish. It featured a metal drag and a locking mechanism to secure the sword in place.

The Shin Gunto swords were standardized to ensure consistency and ease of production. They were issued to officers in the Imperial Japanese Army, and variations existed based on rank and branch of service. While they were not as refined or ornate as traditional Samurai swords, the Shin Gunto swords were still considered a symbol of authority and carried a sense of tradition despite their utilitarian design.