GHK-AK V2 Retrofit Kit

Installation Notes

Due to dimensional variations and manufacturing tolerances among different brands, minor fitting adjustments or modifications may be required when installing T-N.T. upgrade kits. For optimal performance, installation by users with basic DIY experience or a professional airsoft technician is recommended.

Product Notes

This product requires a T-N.T. dedicated bucking and is compatible with MARUI GBB inner barrels.

1. Due to minor tolerance variations in some AK batches, installation may occasionally be less smooth or cause feeding issues. In such cases, it is recommended to slightly trim approximately 1–2 mm from the lower edge of the side wings on the hop-up chamber, based on actual fitment, to ensure proper installation and operation. 2. The number of turns when threading the outer barrel into the receiver is also an important factor. It is recommended to first remove the outer barrel, install the hop-up chamber assembly, and then reassemble the outer barrel. Tighten it until it properly secures the chamber; over-tightening may affect the adjustment dial functionality. 3. The above suggestions are intended for users with basic DIY experience, or you may have the installation performed by a trusted shop or professional technician. 4. If you have any further questions, please feel free to contact T-N.T. STUDIO, and our team will be happy to assist you.