What nomenclature is used for the boresight?

The nomenclature used for the boresight is M140A1. This equipment is crucial for ensuring that the weapon system is accurately aligned with its target by allowing the crew to verify and adjust the aiming point. The M140A1 boresight is designed specifically for use with various artillery systems, including the M119A3, to facilitate precision in firing operations.

The other options, while they may represent other equipment or systems, do not pertain to the boresighting process for the M119A3. The designation M140A1 highlights the specific model designed for this task, allowing crews to maintain efficiency and accuracy in their artillery operations. Understanding the specific nomenclature is essential for correctly identifying and utilizing the equipment in the field.