I'm not sure what getting home from a tour to Afghanistan has to do with getting a C&R license. If he is bringing into the US some C&R eligible souvenir firearms, there a slew of US Customs & CA. laws, and military base rules & regulations concerning such imports and a C&R has no effect on those laws, however ditto what Walter Rego posted. A C&R is mostly useless in CA., as CA law allows only FFLs to transfer guns between buyer & seller, however when I'm out of state, the C&R usually allows me to buy a C&R from a gun store that has it on their books. Then when I get home to CA., I'm required by CA laws to register the gun in CA. Ed.