get your new Drone loads... :o
(http://bearingarms.com/wp-content/uploads/2013/09/lg-drone-loads.jpg)
read more:
http://bearingarms.com/barrett-drone-killer-rifle-on-display-at-modern-day-marine/ (http://bearingarms.com/barrett-drone-killer-rifle-on-display-at-modern-day-marine/)
http://kitup.military.com/2013/09/barrett-unveils-drone-killing.html (http://kitup.military.com/2013/09/barrett-unveils-drone-killing.html)
They're doing it all wrong. Here's THE solution:
http://mil-com.me/1fugQRX (http://mil-com.me/1fugQRX)
DU projectiles are available, but you'll need (another) special permit, I'm sure.