Have a new, factory test fired, AR10 flat top upper that includes an Armalite scope mount. Bolt Assembly is not included (they are in my other upper).... This is the standard 16in flat top w/ chrome lining, and recoil check, I bought new less than 2 months ago. I prefer my 20" stainless on it. This is great for someone with an A2 who has trouble, like I did w/ my old one, making scopes work!! Anyway, asking $500 plus shipping. Or make offer.