What is the first step in adjusting the windage on the front sight assembly of the M240?

The first step in adjusting the windage on the front sight assembly of the M240 is to loosen the adjusting screw on the opposite side. This action is necessary because it allows for the adjustment of the front sight without forcing or damaging the assembly. Adjusting the windage typically involves moving the front sight left or right to ensure accurate aiming, and loosening the opposite screw creates the necessary slack that permits movement.

By doing this first, the technician can then make appropriate adjustments without encountering resistance, ensuring that the changes to the sight alignment can be done safely and effectively. This systematic approach is crucial in maintaining the integrity of the weapon's aiming system and ensuring that adjustments lead to improved accuracy.