Jeidanten shows the features and operations of the licensed GHK DD PDW M4 AR V3 GBB. This has a new bolt carrier with increased cylinder capacity, a new nozzle for improved accuracy and recoil, a quick HOP adjustment system, a stainless steel V3 buffer for durability, and new GMAG V3 magazines with increased air capacity and gas efficiency. With a single gas fill, it can fire 200 rounds in single-shot mode or 120 rounds in continuous fire. The Cerakote finish enhances its durability and aesthetics, and an optional reinforced recoil spring can be added for increased operational realism, especially when using CO2 magazines.