Do you have info on National Firearms Act?

Additionally, in California, any rifle chambered to fire the .50 BMG cartridge is defined by statute as an assault weapon, regardless of action type. Since most .50 BMG rifles lack the characteristics that are commonly used to define assault weapons, and do not differ significantly in their rate of fire or ballistics from many other large caliber rifles, some interpret this as simply a politically-expedient means of banning a type of firearm not previously included in any assault weapon legislation. There have been similar efforts to outlaw the .50 BMG at the federal level by classifying these weapons under the 1934 National Firearms Act, which provides for federal regulation of machine guns, short-barreled shotguns and rifles, suppressors, and destructive devices.