I work (occasionally) for a good friend that owns an indoor range / gunstore. (dont think ive ever collected a paycheck there, i always find some way to "reinvest" it back into the store"

The process is easy. What you will need to do is let your gunstore know that your buying a firearm from this person, they the seller will need the info from you regarding where you want it shipped. What we usually do is tell our customers to give the seller our name, address, phone# and fax#. WHat then occurs is the seller will contact your gunshop, request a copy of their FFL. In turn we send a copy to him, he sends a copy to us. The gun is paid for by you, the firearm is shipped via FEDEX or something similar, then we take care of running the backround check (in PA its a phone call called a PICS check) and the 4473 form for the feds. We then charge you for doing the paperwork. Its a fairly easy process
One thing to note..........after buying the gun, paying for shipping and paying for your backround check and paperwork, ive found that it costs less to go to your local gunshop and order the gun then purchase it off the internet. I had a gent that recently purchased a Wilson Combat CQB 45 off the internet and if he would have just ordered it thru us it would have saved him about $35................just food for thought, any questions you have let me know, im glad to help out
On a side note, hope Army life is treating you well, and thank you for doing it
