Vertical Grip & Front Mount for SplatRBall SRB400, SRB400-SUB

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How To Use Take off the original battery case cover Install the FXT WORKS Front Rail Mount as a battery case cover Install the FXT WORKS Vertical Grip on the Front Rail Mount Featu res Material: ABS Color: ‎Orange/Blue Weight: 60 g (Front Rail Mount: 31.5g, Vertical Grip: 28.5g) Compatible model SRB400 SRB400-SUB How to upgrade Use a screwdriver to disassemble the gun body casing, rotate the button at the back of the gearbox, remove the original spring, and replace it with a new one. Upgrading the firing rate is effortless! With the spring FXT WORKS provided, enjoy reliable performance at 250-270 fps for the SRB400 / SRB400-SUB / SRB1200 / SRB375M. Show more