BREAKING: Las Vegas shooter may have used 'trigger crank' to make semi-automatic weapon fire faster, expert says

Having trouble viewing this email? | View it in your browser   The speed, pattern and inconsistent rate of gunfire heard in videos of the Las Vegas shooting indicate the suspect could have used a cheap and legal modification to make a semi-automatic capable of firing even faster - almost 700 rounds a minute. FOR MORE ON THIS STORY, GO TO:   USATODAY.COM     Help | Advertise | Home Delivery | Privacy Policy - Your California Privacy Rights     © 2017 USA TODAY, a division of Gannett Satellite Information Network, LLC. 7950 Jones Branch Drive, McLean, VA 22108