RT Custom

[FZRaven]

Ok so i'm thinking about getting a RT Custom but the one thing i wanna know is can i get just a stock mag rail? No sight rail or the front grip? (i just dont like the look.)
Any way what i was thinking of was
Black X-valve
ULE CF Pewter
Y Grip black
ULE Trigger Pull Kit
Black Kila Magnetic Detent
So my only other question is how the heck to you adjust the volicity on a mag?
**Edit**
I would also like to add i'll be using a 45/68 preset at 800psi cause thats all i got right now.

[Tunaman]

I can build that marker for you with a stock Mag rail if you like. Email me.

[Joni]

You adjust the velocity by turning the nut in the rear of the valve in or out (in to increase the velocity)