Use high current lipo cells to power the nerf rival nemesis with stock switches in conjunction with a simple mosfet based circuit that requires minimal shell modification. Id also suggest that you get pusher motors with good torque.
Nerf Rival Perses Perses Mxix 2020 05 07
Nerf nemesis wiring diagram. Working on creating videos explaining the wiring of various electronic blasters. Not currently accepting. I hope it helps. Its time for an easy mosfet wiring guide. Ive mainly seen the use of high amperage micro switches in this community but as tech in blasters microcontrollers brushless motors continues to expand and the motor arms race delivering new high draw motors to the scene its time for another mosfet guide without confusing the. The wiring diagram looks right to me.
Im assuming you are getting some sort of double pull switch for the selector which should work well. Starting with the stryfe and all its variants i hope it helps. It greatly helps with motor braking and with this setup you may get control over runs where the pusher never stops with a low torque pusher. Stock internals on 3s. This is a guide on the wiring diagram of the full auto conveyor belt blasters. D hope it helps sorry about forgetting the labels this timewonder how many comments i will get about it.
There havent been too many so ill add mine to the list. Not currently accepting. By fan request i give you the stampede.