There are different types of hop-up units based on the type or brand of the gun being used but they all use the same basic principle. The hop-up unit is made up of several components and nearly all of them have aftermarket versions that you can purchase to fine-tune your AEG, GBB, or spring-powered gun to your liking. When the pellet hits the hop-up rubber it increases the friction on the topside, causing the bottom of the pellet to move faster than the top which begins the rotation to cause backspin. As it moves forward it comes into contact with the hop-up rubber which protrudes into the chamber from above. Once the pellet is inside the chamber it is pushed forwards by a burst of air when the gun is cycled. The main part of the unit is called the hop-up chamber. There are several key parts to a hop-up unit that are used to create this effect.

This is a phenomenon whereby the force that the pellet imparts on the air around it causes a change in air pressure and generates a lifting force underneath the pellet, thus increasing its range and flattening its trajectory. The reason this increases the effective range of the pellet is due to something called the ' Magnus Effect'. How does a hop up work?ДЄ hop-up unit works by making the BB pellet spin backwards to increase the distance it can travel. It's fair to say that the arrival of the hop-up unit changed the game of airsoft forever. The hop-up system is an integral part of the airsoft gun that is used to boost its effective range, allowing the user to engage a target that is further away. You may think that airsoft guns have always included a hop-up and whilst it's extremely difficult to find an airsoft gun on sale today without a hop-up chamber this wasn't always the case.

Class 1 hop up