The SKD 1911 Hopper Fed Gel Blaster blaster is the best performing pistol to date. This blaster has features like hopper fed, 15 high-speed rounds per second, 120-140 feet per second, 20m shooting distance, etc. Do not upgrade any part of your toy gel blaster as this will void the warranty. Upgrades refer to pulling any of the blaster apart or opening it up, changing springs or upgrading the battery from 7.4v to an 11.v battery.