What does the BATF say?
They call it a luger carbine, so I would use the frame;
On pistols it is the frame, not the receiver that is recorded, so never use the receiver, on mix-masters, I think I'd make a notation saying so.
Ed
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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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