[sonat]

hi all
i am looking to buy another airsoft aeg

but do not want to waste money

it need to have semi mode or full auto if possible, the acurate of the aeg need to be extremely good for long range
what should i buy

i have buy a use p90 and found out that acuracy is poor,
should i upgrade it, and what parts will help

i try a longer barel result are the same
i have a hard spring inside
need advise before wasting money