With the release of the GHK AKM V3 GBB which many welcome, 4UAD Smart Airsoft goes more in depth to find out if it is worth buying. The new version is said to have taken a great leap from its V2 Predecessors. The new V3 Version is equipped with a 21mm ovresized piston, and a newly design Hop Up Chamber Unit, which allows the rifle to improve in both the recoil sensation and accuracy simultaneously. Reliability is also said to have greatly improved by the above designs.