1A51

1A51 is a designation from the Soviet and Russian military’s GRAU index system applied to a piece of electronic equipment. Public information about the exact nature of 1A51 is limited, and there is no widely accepted, official description available in open sources.

What is available in defence references suggests that 1A51 could be a fire-control or targeting-related device, potentially associated with air-defense or artillery systems. However, the precise role, compatible platforms, technical specifications, and deployment timeline remain unclear due to the scarcity of declassified documentation. The designation is part of the broader family of 1A-series devices, but specific connections to particular systems are not consistently documented in open literature. As a result, the current status and operators of 1A51 are not publicly confirmed.