1. Many sights are adjustable, so they can be calibrated to match the user and the shooting distance.
2. Fixed sights still provide a reference point for you to aim with, though you’ll have to compensate on your own. The sight isn’t “accurate.” It’s a tool to help the user shoot accurately.
3. Most sights (and scopes) have markings etched into them to assist you in compensating for the bullet’s expected trajectory.
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