The ambush method is used when it is difficult to track the target with the rifle, as in the prone, sitting, or any supported position. The lead required to effectively engaging the target determines the engagement point. With the sights settled, the target moves into the predetermined engagement point and creates the desired sight picture. See figure 10-9.
The trigger is pulled simultaneously with the establishment of sight picture. To execute the ambush method, a Marine performs the following steps:
Select an aiming point ahead of the target. Obtain sight alignment on the aiming point.
Hold sight alignment until the target moves into vision and the desired sight picture is established. Engage the target once sight picture is acquired.
Follow-through so the rifle sights are not disturbed as the bullet exits the muzzle.
A variation of the ambush method can be used when engaging a stop and go target. A Marine should look for a pattern of exposure (e.g., every 15 seconds). Once a pattern is determined, a Marine establishes a lead by aiming at a point in front of the area in which the target is expected to appear, then he fires the shot at the moment the target appears.
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