Which component is typically adjusted to change the elevation of a projectile?

The elevation of a projectile in firearms typically refers to the vertical placement of the trajectory of the bullet when aiming at a target. The component responsible for adjusting this vertical aim is the rear sight. By raising or lowering the rear sight, the shooter alters the line of sight, effectively changing where the projectile will strike relative to the target height. This adjustment is crucial for accurate shooting, especially at varying distances where the bullet's drop due to gravity needs to be compensated.

In contrast, the windage knob is specifically used to adjust horizontal placement, which helps counteract wind drift or other horizontal misalignments. Bore alignment refers to the relationship between the barrel and the sighting system, while trigger pull concerns the pressure required to fire the weapon, neither of which directly affects vertical aiming adjustments.