UKA-PERUN-HB-V3-UWSpecifications: Brand: Perun Permissible Battery Voltage: 7v 17v Compatibility: For Tokyo Mariu Spec Version 3 Gearboxes Features: Perun V3 Hybrid replaces mechanical contacts in your airsoft replica or gel blaster and provides lots of useful features. Optical and magnetic sensors allow to eliminate many moving parts that are prone to damage, thus increasing the reliability. Adaptive trigger control allows switching from a very short trigger travel to