i think what he means, kwelz, is that mil-spec does not in fact meet the needs of everyone.
for instance: the guy that wants a half moa ar15 is going to be sadly disappointed trying to obtain such with a mil-spec m4 upper, i dont care how many times you mpi a mil-spec m4 barrel, it aint happening.
however
should a fella find himself capable of dipping below the line of what is the best of the best of the best, it can be obtained quite easily without breaking the bank.