In 1928, five years before the rise of Hitler, Germany's freely elected government enacted a "Law on Firearms and Ammunition." This law required anyone who owned a firearm, or who wanted to own a firearm, to make themselves known to the authorities. Anyone who wanted to purchase a firearm had to get a "Firearms Acquisition Permit." If you needed ammunition, you had to get an "Ammunition Acquisition Permit." When you wanted to go hunting, you had to get an "Annual Hunting Permit." Every firearm that changed hands professionally had to have a serial number and the maker's or dealers name stamped into the metal. "Proof of need" was made a condition for issuance of all licenses, not just the carry permit. Mandatory prison sentences were imposed on anyone who professionally sold or transferred a firearm or ammunition without a license. Truncheons and stabbing weapons were subject to the same licensing requirements as firearms, in terms of their manufacture and sale.
As a result of the 1928 Law, all firearms and firearms owners were registered! To take firearms from anyone they distrusted, the Nazis simply did not renew permits. Under the law, their privately created law, the Nazis could now easily confiscate all firearms and ammunition from any, or all, selected groups. The gun law of 1928 had served the Nazis well. It made almost all law abiding firearms owners known to the authorities. The 1928 law on firearms and ammunition helped the Nazis to destroy democracy in Germany, by disarming the law abiding majority, whom they feared.
"This year will go down in history. For the first time, a civilized nation has full gun registration!Our streets will be safer, our police more efficient, and the world will follow us into the future" - Adolph Hitler, 1935
Adolph Hitler's Nazi Weapons Law of 1938 ,specifically outlawed firearms ownership, by Jews and Gypsies and anti-Nazi opposition successfully eliminating 13,000,000 of his foes.