"Assault" rifles are capable of full auto by definition. Modern Sporting Rifles if presented correctly are no more evil than a WWI bolt action any more than a modern car with anti lock brakes, air bags and radial tires compared to a model T. Adjustable stocks allow firearms to be fitted to shooters of various sizes. Modular grip systems allow those with limited range of motion and prosthetics to properly manage a firearm. Muzzle brakes allow those in wheelchairs or otherwise disabled to fire big game rated calibers without fear of being knocked out of their chair. When the MD GA was faced with the ADA implications of banning these "copycat" features they cut the list to folding stocks, flash hiders and grenade launchers.