Airsoft Shooting Gear Army Force 8mm Complete QD JG M-Series V2 Gearbox Version 2 Front Line "QD Transform" gearbox is a new generation gearbox with all the unique & great features of a STAR / ARES (QR gearbox) and Deepfire gearbox (Micro switch). This gearbox has an unique shell, spring guide, selector plate, cut-off lever and trigger, all other parts are compatible with regular AEG Version 2 8mm M4 gearboxes. For JG (Jing Gong) M4 standard gearbox. Weight - Approx 540g Go to the middle left of the page to see the full Product Description.