TPS-A2 is an underwater assault rifle designed for a dieselpunk world inspired by early-mid 20th century engineering and submerged exploration environments. The weapon is built around a powder-based system adapted for underwater use, featuring an extended ammunition system with a recessed projectile design to maintain ballistic efficiency in dense environments. This concept is part of a larger universe focused on post-apocalyptic oceanic exploration, combining Soviet industrial aesthetics with retrofuturistic technology.