Once the Federal Assault Weapons Ban of 1994 was passed, prohibiting the manufacture of firearms with bayonet lugs (among other features), the M1A no longer shipped with a bayonet lug. Although the 1994 law expired in September 2004, making bayonet lugs on newly manufactured firearms legal again (in most states), Springfield Armory has not restored that feature. Since the bayonet lug is attached to the flash suppressor, "post-ban" rifles can easily be fitted with a bayonet lug by fitting a pre-ban flash suppressor.