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.
This product is compatible with MARUI-spec GBB buckings and barrels.
For APFG XM7 installation, the original XM7 HOP Nub must be used.
For players who want to use the original inner barrel or an aftermarket barrel, some basic DIY work may be required. Please refer to our installation guide for detailed instructions.