Came off an upper I have had for 10 yrs. Probably less than 500r on it. Believe it to be an Oly or Bushmaster. Complete with F/A, dust cover and A2 sights. Excellent condition. $75 shipped M/0, personal check or Paypal (no fee) if fine.
Email/IM to claim.
BTW no pics unless you want a crappy cell phone photo, will guarantee condition. Many positive feedbacks.