Short stroking an airsoft gun is a technique used to improve the gun's performance and accuracy. It involves adjusting the gun's mechanism to reduce the amount of air used to fire each BB, which can increase the accuracy of the shot. In general, short stroking means using less of the entire piston travel to fire the shot. This adjustment can be made by reducing the amount of spring tension or increasing the piston head's contact surface with the cylinder head. It can also be achieved by altering the hop-up or bucking. Short stroking can increase the rate of fire and accuracy of your airsoft gun, but it can also cause jams and even break your gun if done incorrectly. It is important to consider what type of airsoft gun you have and how it works before attempting short stroking. If you are unsure, it is best to consult a professional before making any adjustments.