For sale is a factory built SD-556 with a Geissele Super Dynamic Combat trigger and KNS pins installed. There is a ding in the upper receiver as can be seen from the pictures. Extremely low round count. Price does not include backup iron sights or Surefire light, which can be had for an additional fee. $1400.00 for the rifle $1475.00 with backup irons or $1550.00 with the the Surefire and irons. Comes with the box. No magazine included. No trades.