PDiK V3Description Developed and manufactured by Mancraft, this drop in kit forms the basis for mounting HPA conversions for the most common AEG replicas with the V3 gearbox. The conversion is CNC machined from high quality aluminum alloy and anodized to minimize scratches and external physical damage. The kit is a universal model that fits the most common V3 type gearboxes. This includes the AK, G36, and AUG series of rifles, carbines, and sub rifles.