used BCM Lt weight 14.5 upper complete with BCM bolt carrier group and Mod 4 CH, KAC rear 600m sight with Troy 13 rail with built in flip up front cerekoted Foliage Green. Sling swivel and bottom rail attached. Permanent attached BCM Mod 1. Very low round count. Discreet PayPal or USPS MO. Shipped Conus only. $675.00.