Anti Reversal Latch.
Prevents the gears from spinning "backwards" after each shot.
If you notice on the bevel gear there's "notches" that's what the ARL gets stuck against preventing the gears from spinning backwards.
Also if you install the wires on the motor backwards the gears will "seize" and not spin backwards.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE