I was thinking along the same lines. i have Nicks battle system in my Denix 88. I was going to use one of his battle systems or a DBC. I dont know if either can be activated with out the use of a TX/RX function. i will find out though. i still think the hardest part will be a reliable triggering system. I was also just looking at model RailRoad proxsimity sensors. this may be an option also. the trigger really does not need to be directly near the gun. You can just run long enough leads back too the control system.