The external mode X7 e-Grip can shoot up to 20 BPS and features 5 firing modes including semi auto, turbo, 3-shot safety burst, auto response and full safety auto. New water resistant system is great for woodsball play and can change modes on the fly. Internal mode system can also be set to semi-auto to allow the e-Grip to meet regulations of any organized field event. Requires 9 volt battery (not included).