So over the year I've gotten my buddy interested in buying my sister's Taurus PT140. Needless to say, he got sent back early (we're deployed) and he wants to go pick it up. I've already gotten a copy of the bill of sale sent to my sister for this and now we've hit a snag.

The guy is a Nebraska resident, stationed in Colorado. How do we make this simple? If I'm not mistaken, since he is a resident of another state, I cannot legally transfer the pistol to him without going through an FFL holder.
Am I right? I just want to be sure before I go thru with this sale.

Thanks!