G & G GC16 Wildhog 12 inch(Full Metal)The GC16 has an installed pre-programmed MOSFET chip that is able to stop batteries such as a Li-Po from over discharging and becoming damaged. The MOSFET is also programmable to shoot from full auto to 3-round burst. Additionally, G&G; has installed an electronic trigger unit that increases response and assists in preventing trigger burns or locks in rapid semi-auto firing.ReceiverMetalRailCNC Hard-AnodizingOverall Length715mmWeight2553gBushings/bearings8mm Ball BearingsMotorIFRIT Motor 25000rpm (ORANGE)Battery9.6v Ni-MhInner Barrel Length6.08mm Brass Inner Barrel 363mmHop Up ChamberPlasticMagazine300RTypeAEGBlowbackNoWire18 AWGCylinderBrassCylinder HeadPlasticPiston HeadPlasticElectronic TriggerYesMOSFETYesSpring GuideBall BearingAccessoriesNo