The author of the California law, state Sen. 'There's a big fight brewing over these restrictions on guns for 18, 19, and 20-year-olds because the courts are in the midst of a great expansion of Second Amendment gun rights,' says Adam Winkler, a UCLA law professor who writes about gun policy. Last week, a panel of three federal judges in California agreed, overturning the higher minimum age approved by the state last year. Gun rights groups, meanwhile, have sued, calling this a violation of young adults' Second Amendment rights. In a statement investigators believe the 18-year-old wrote and posted online, he says he modified the rifle in ways that would make it illegal under New York's definition of 'assault weapons.' Police say he used a semi-automatic rifle called the Bushmaster XM-15, which he bought legally at a licensed gun store, after passing a background check. He's charged with first-degree murder in a shooting authorities describe as racially-motivated domestic terrorism. last Saturday has renewed the debate over the minimum age for legally purchasing what some people - such as President Biden, call 'weapons of war.'ДЄn 18-year-old is accused of driving to a supermarket and targeting African Americans as he opened fire, killing 10 people. The mass shooting in Buffalo, N.Y., has prompted questions about the effectiveness of 'red flag laws' passed in 19 states and the District of Columbia.

A row of rifles for sale is on display at a gun shop in Aurora, Colo., on July 20, 2012.

Semi automatic machine guns for sale