everything i needto build a mag?

[painTech]

i got a body and a trigger frame. do i just need a rail and a valve and im set?

and could anyone tell me where to get a rail and valve cheap?

[argnot]

you need a valve, rail, bushing, twistlock, field strip screw, front screw, bolt, spring, sear assembly,barrel. cheapest place is in the misc forum. I think I covered everything.