makin a mag: from the ground up

[cannonfodder]

i want to buy all of the parts seperately because i dont like any of AGD's mags but i want a high performance model
i however no almosgt nothing about them so....
i think i need
a body
a trigger
a valve
and an air source adaptor
im buying (i think)
an X Valve
A ULE Body
And an intellifeed trigger do i need anything else??

does an X VAlve come drilled for a bottom line hose to be fitted to the side
am i missing any internals???

thanks for the help

[Torbo]

you need a body rail.