I would like to order two custom handgun frames from a 3rd party supplier. Do I first pay the store that has the handgun frames and have the frame shipped to IRunGuns FFL in the States? Or does IRunGuns facilitate the purchase and transfer from the 3rd party store on my behalf? How do I follow/make sure the item from 3rd party to IRunGuns and on to me? I have purchases parts coming from the States through IRunGuns before but never a restricted firearm. And how much will it cost for each frame for the import fee.