THIS NEW amazing system was especially developed to replace and upgrade the entire GHK AK hop-up structure. With the ongoing demand for quality upgrade parts for GHK AK, TNT AIRSOFT STUDIOS has developed this kit which includes all necessary parts including a GBB hop up bucking and CNC hop up chamber.
- GHK AK series GBBR HOP-UP chamber x1 (CNC aluminum body+anodized+T-N.T. lettering)
- CNC aluminum HOP-UP adjust bar x1、PIN x1
- elasticity pressure block x1
- jimi screw x2
- CNC aluminum adjustment knob x1
- T-N.T. Located Directional Rubber for GHK AK GBB x1
- T-N.T. Precision Air cushion Directional inner barrel x1