
If you haven't already modded your controller to use buttons instead of stick moves for firing of the main gun & MG, I highly recommend it if you're good with soldering - I don't have schematics but basically it involves wiring the switches parallel to the stick contacts
These two button switches needed to be:
"SPST" (single-pole, single-throw) = for one circuit only
"MOM" (momentary) = switch is only active while button is being pressed
"NO" (normally open) = circuit is 'closed' (connected) only when button is being pressed
Found the perfect ones on Amazon (see 'searchable' description following photos):



Since I can't seem to post the direct link to Amazon here, just go there & search for "Momentary Push Button Switch 1A 250V AC Mini Push Buttons Switches 2Pins ON Off 7MM Small Pushbutton Normally Open Round SPST" & it should be the first thing that pops up