For sale is a very good condition Armalite AR-180 chambered in 223/5.56.  This semi auto rifle has a 20 inch barrel with the original flashhider and one 20 plus1 round magazine.  Also with this rifle is an AMT night vision scope model Aries MK258, mounted with an SK scope base.  The stamping on the receiver states:   MFG for Armalite Inc Costa Mesa Calif USA by Sterling Enlgand.  Serial number: S 25830