The assumption that a law or institution from another country will work the same here with a completely different population size, culture, demographics, history and geography is sheer lunacy. Do they think countries are just test vectors that can be manipulated on a whim to produce the right outputs? The US did not develop out of feudalism. It was not a former penal colony. For the first century of our existence, especially in the frontier, people lived without the heavy-handed bureaucracy called police departments. The first professional police force wasn't created until 1838 and that was in Boston. Gun culture emerged out the necessity of having to defend yourself against bears, wolves, Indians, and highwaymen. No bureaucrat was coming to save you when shit hit the fan, and that's still true today in much of rural America. Even in cities and suburbs police have no legal duty to protect you from crime; SCOTUS has made that very clear. And what is the historical precedence for gun control here. It was an attempt to disarm blacks after reconstruction. The war on drugs and war on drugs has shown us that the bill of rights are not a buffet that the government can pick and choose from and laws are not fined tuned for specific outcomes; mission creep and selective enforcement are always part of the bureaucratic design as is organizational entropy which is worsened when countries get as large and heterogenous as the US.