If you're purchasing a WWII-made P-38, print out page 18 of the BATF C&R List that will have the line "All properly marked and identified semiautomatic pistols and revolvers used by, or mfd. for, any military organization prior to 1946." and bring that to HPD along with a signed copy of your C&R FFL.
For other C&R weapons not specifically listed, print out page 3 under "What are Curios or Relics?" that includes the line: 1.) Firearms which were manufactured at least 50 years prior to the current date, but not including replicas thereof. I used this page for registering a JC Higgins Model 50 .270 Win that belonged to dad.
http://www.atf.gov/publications/download/p/atf-p-5300-11/atf-p-5300-11.pdfIf you plan on purchasing one of the newer alloy-framed P-1/P-38s that are being advertised as C&R, I haven't been able to find a BATF source for this C&R claim. I would like to order one myself, but since we have to produce the actual C&R source to the HPD firearms registration, I haven't ordered one. Hopefully, I'll be moving to a less "progressive" state in a few years and won't have to deal with this firearms registration crap.
I found this link posting a supposed BATF email regarding the C&R status of the P1/P38, but since it didnt come from the BATF directly, I would be hesitant to use it.
http://www.waltherforums.com/forum/classics/18794-p38-p1-c-r-confirmation.html The reason is, another forum member posted that the BATF agent that he contacted said that the later P1/P38s WEREN'T C&R.
http://www.gunauction.com/help/forum/displayforum.cfm?lastmessageid=260186&subjectid=38599"I just heard back from the ATF and per them, Walther P1 pistols that are less than 50 years old are NOT C&R eligable. i mentioned to them that (without giving names) that a number of wholesalers are calling these C&R and the ATF agent googled Walther P1 and he said that he saw all of the internet ads. The ATF agent told me that these are not C&R and those companies should not be accepting C&R lic. to ship them.