GATE ASTER SE EXPERT for V3 GB hpa engine and MTW 9 series Specially designed and MTW 9 series Specially designed with BB Latching System to prevent dropping BBs after removing the magazine Manually opened to release BBs from inside hopup chamber by hand The UV LED Tracer and Electronic Module to glow BBs in the dark ready Enhanced Stainless Steel SearHighlighted featuresPrecision CNC machined Stainless SteelLighter and Crispy trigger pull feelingConsistent and DurableCompatible with stock TM Hi Capa frameMAF Polishing Technology to make all surface smootherFor TM Hi CAPA*PS: Please note: installing parts assemble fitting airsoft gun will need intermediate knowledge Quantum Trigger included in the kit Hair trigger out of the box