i know some guys here sometimes trade guns and rifles, how do you go about conducting a trade out of state, for example with rifles.

Don't think of it as trading. Think of it as you selling a rifle to someone out of state, and then purchasing a rifle from out of state. You would mail the gun to his/her FFL, and they would mail their gun to your FFL.

Yep, like Jon said, a trade is treated 100% like a sale, with the only exception that no money is exchanged between the two parties. You'll still need to have a valid FID (and permit if it's a handgun) to receive the firearm and you'll need to pay your FFL for the transfer.

thanks doesnt sound hard at all....