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.
Because the inner barrel is too short and the air cushion effect is not obvious, inner barrels below 220mm have no air cushion groove design.