You can quote them the pages in the ATF book that says that a FFL 03 is legal.
or tell him that you'll send a copy of your drivers license as proof.
And yes, I have faced this 3 or 5 times, primarily from Texas dealers, but also from a dealer in other states a couple of times...
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Edward Tinker
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Co-Author of Police Lugers - Co-Author of Simson Lugers
Author of Veteran Bring Backs Vol I, Vol II, Vol III and Vol IV
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