Before firing at an enemy combatant located 670 meters away, how should you adjust your M240's sights?

Adjusting the M240's sights correctly is crucial for accurate targeting, especially at a distance like 670 meters. The appropriate method in this scenario involves using the rear sight's settings, which allow for adjustments to account for range. By squeezing the catches on the rear sight slide and setting it to the 700 meter range in a vertical position, you are aligning the sights to compensate for the trajectory of the round over the distance you are aiming at. This adjustment helps ensure that the bullet rises and falls correctly as it travels to the target, enhancing accuracy.

Setting the rear sight to a vertical position at 700 meters provides the necessary elevation to ensure that the round is projected towards the target with the correct trajectory. In essence, this adjustment allows for an optimal line of sight, aligning the firearm with the actual distance to the target, thus improving the likelihood of a successful hit.

It's important to ensure proper use of the rear sight mechanism because merely maintaining it in its original position or utilizing the front sight alone would not adequately account for the distance involved, which could lead to misfires or missed targets.