The Maple Leaf Crazy Jet barrel is a great upgrade for your gbb pistol. The Crazy Jet barrels have a special design, where the end of the barrel is slightly wider and is provided with an airflow channel. This ensures a lower air pressure at the end of the barrel. Air is discharged through the airflow channel before the bb leaves the barrel. Which creates an air pocket around the bb, so that the bb has less resistance when leaving the barrel. This improves the accuracy of each shot. Without loss of fps.