Originally posted by insouciant:
Actually this might be a dumb ques and its probably been asked
before, but why doesn't SAF just fit a bigger gun to the Bionix to
use as a AMX10 replacement?
Nope this is not a dumb question. 
Yes the BX is amphibious but it is considerably less amphibious as
compared to the AMX-10 and even the venerable M113! I don't think
its a good idea to explain why its that so in a public forum but
you can take my word for it.
Since AMX-10 is being primarily used for amphibious assault
operations, an up-gunned BX will not be an ideal choice. Unless of
course STK chose to develop a variant of the BX with greater
amphibious capability otherwise BX is not a good candidate for
replacing AMX-10. In fact, upgrading the older M113 to Ultra cum
Arisgator standard might even be a better idea due to our large
stocks of M113 and reduce cost as getting a new vehicle is more
expensive. 