● GHK AK V3 GBB version system. ● Newly made steel receiver with realistic scale. ● Material upgrade, full-steel exterior parts. ● Threaded Locking Steel Outer Barrel are more reliable. ● Receiver with military-grade QPQ surface treatment. ● The side rail is secured with solid rivets, ensuring that the rail remains stable and shake-free even when carrying heavy-duty optics. ● AK V3 GBB HOP-UP set (GBB specification). ● New dual-pressure point HOP-UP system. ● HOP-UP group quick-release design, easy to maintain and replace. ● Full CNC process steel bolt carrier and aluminum light-weight piston rod (#AK3-KIT-01). ● Steel two-stage recoil spring set. ● The bolt stroke is lengthened. ● 21mm oversize nozzle cylinder, better recoil feeback. ● Optimized guide rail to reduce the risk of breakage of the nozzle group. ● Full steel fire control parts (hammer set). ● With Empty Stop-hammer release (dead trigger) function. ● Brand new MCGS system gas magazine, with AK74 5.45 cailber style. ● The multi-compartment gas system (MCGS) design extends gas expansion time and improves vaporization efficiency, while significantly enhancing gas fill capacity. ● The magazine shell perfectly reproduces the "fiber flow textures" found on real-world injection-molded magazines, providing an unparalleled level of visual and tactile realism.