ko or m11?

hi, got ppl buy my m11, i i saw ko  very ying zai,

my m11 is fm 27,

i got another m3 is fm 40,

so i sell my m11 and buy ko fm 40,

my question is can my sanwa fm 40 rx be use in ko fm 40 tx?

                               
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我就用Ko槍,加一個Futaba接收~無問題~

thanks. then ko ex-10 the turning button easy to break?

just like my ice charger, half year die after i turn and turn.

how a bout ko?