I have a hard-to-find BNIB MK18 upper ...old style without all the BS "NASCAR" logos painted all over the upper receiver. It comes complete with DD M16 BCG and charging handle. I had plans to put together a high end FDE AR pistol but have decided to build a tactical bolt gun instead. Paid $999 for it ... asking $950 + shipping. The DD fixed sights in the first pic are also for sale ... $100 for the set; ONLY if you buy the upper. I will accept PayPal payment(+4% to cover fees) or USPS Money Order only. Located in WA.