Blitz, I might suggest the following: if you plan to keep the DBC set in 'block recoil' mode, then use the stock muzzle flash system (if you don't like the red led, just change it with a white one): so you will have a flash at least when shooting with the left stick.

If you plan to keep the stock HL recoil (as I do), you can assemble it as I did, connecting the flash led to the mainboard.


One side note about the internal microswitch. It has to be positioned in such a way that the barrel recoil movement begins BEFORE the micro is closed. That's a critical point.

In fact, if the 'K' is pressed before the recoil motor is activated, any current to recoil motor is cut off by the HL board itself and no barrel recoil can be obtained. The shooting signal coming from the left stick forward movement is ignored.

But if the barrel motor starts to move before it, the barrel recoils and at that point the mainboard is bypassed by the direct connection of the barrel motor to the power supply (through the recoil micro and the additional black wire connection), and the barrel returns to its original position regardless of any mainboard signal.