http://www.keepandbeararms.com/downloads/GunFacts_v3.2.pdf
It did in Canada. The handgun registration law of 1934 is the source being used to confiscate (without compensation) over ½ of the handguns in 2001.
It did in Germany. The 1928 Law on Firearms and Ammunition (before the Nazis came to power) required all firearms to be registered. When Hitler came to power, the existing lists were used for confiscating weapons.
It did in Australia. In 1996, the Australian government confiscated ove 660,000 previously legal weapons from their citizens.
It did in California. The 1989 Roberti-Roos Assault Weapons Control Act required registration. Due to changing definitions of “assault weapons”, many legal firearms are now being confiscated by the California government.
It did in New York City. In 1967, New York City passed an ordinance requiring a citizen
to obtain a permit to own a rifle or shotgun, which would then be registered. In 1991, the city passed a ban on the private possession of some semi-automatic rifles and shotguns and ‘registered’ owners were told that those firearms had to be surrendered, rendered inoperable, or taken out of the city.
It did in Bermuda, Cuba, Greece, Ireland, Jamaica, and Soviet Georgia as well.