assuming this is a cast aluminum Z style or Ncstar type, scope mount,
attatches to carry handle
top takes scopes
lower holds lights, Lasers etc..2 weaver type attachment mounts included
25.00 shipped CONUS
these are 29 ro 39 plus shipping in most catalogs and ebay
in good to as new condition, may be a few dings on it. was only used a few times, I dont care for the extra weight of all the gadjets on the carbine..
pic available thursday if needed