Zeroing an airsoft gun is an important part of maintaining it for optimal accuracy. It is a process of adjusting the sights on the gun such that the trajectory of the BBs being fired aligns with the aim of the shooter. Before zeroing a gun, it is important to understand the different types of sights and how they work. Iron sights, red dot sights and scopes all offer different benefits and require different techniques when zeroing. Once you have chosen the type of sight you wish to use, you must determine the range at which you wish to zero the gun. The range should be determined based on the type of game you will be playing and the environment in which you will be playing. After the range is determined, you must adjust the elevation and windage knob on the sight to ensure that your aim is aligned with where your BBs will be heading. Lastly, confirm your adjustments by shooting a few rounds to make sure that your gun is indeed zeroed. Zeroing an airsoft gun can be a tedious process but is essential for improving accuracy and performance in any airsoft game.