Upgrading your Tokyo Marui 5.1 Hi-Capa is made simple with SS Airsoft Custom Hi-Capa Builders Kits, which come with CNC aluminum slides for increased strength and threaded CNC aluminum outer barrels allow you to mount your tracer units. The ultra-light blowback housing and upgraded blowback nozzles generate more speed, while fiber optic sights provide faster target recognition.

Builder kits come fully assembled! Ready to Run!