Dboys BIK-03 AK Version 3 Gearbox

The BIK-03 is a drop-in version 3 gearbox for AKs by Dboys. The gearbox comes pre-assembled, greased, shimmed, and uses 7mm bearings. This gearbox can be used to replace damaged gearboxes, for custom built guns, or for learning how to work on gearboxes.