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mrerick · 10-16-2019, 03:35 PM

Both 9mm and .30 cartridges will fit into the Luger magazine. The barrel determines what the gun will chamber and fire.

The barrel profile and markings don't look like one that left the Erfurt factory on the gun. Erfurt only made military contract guns.

There are what look to be Erfurt acceptance markings on many parts we can see in your photos, including the frame, but not on the barrel.

The aluminum base magazine is later vintage.

There is an illustration of how to determine the caliber (9mm Luger or .30 Luger) in our FAQ PDF document. Why not download a copy? Just click on the FAQ link at the top of every forum page and follow it to the item with the PDF files.

10-16-2019, 03:35 PM	#18
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,925 Thanks: 1,377 Thanked 3,139 Times in 1,520 Posts	Both 9mm and .30 cartridges will fit into the Luger magazine. The barrel determines what the gun will chamber and fire. The barrel profile and markings don't look like one that left the Erfurt factory on the gun. Erfurt only made military contract guns. There are what look to be Erfurt acceptance markings on many parts we can see in your photos, including the frame, but not on the barrel. The aluminum base magazine is later vintage. There is an illustration of how to determine the caliber (9mm Luger or .30 Luger) in our FAQ PDF document. Why not download a copy? Just click on the FAQ link at the top of every forum page and follow it to the item with the PDF files. __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war.