Ah well. I can always order an IBU3 board for the M1, and the IBU2 Pro goes to the Leo2. And that is wot you call "trickle down technology"
The sound channels and 2 machine guns are wot I find most interesting. The M1 has three MGs, and to have at least two of those (the coax and the fifty) work.... Ooooh la la....
Looking forward to this one.