This is a gorgeous geissele SD-556 in Gray. MSRP $1700! Pre-owned but appeares to be unfired and owner has changed some bits including a Magpul grip and stock. The A1 style OEM flash hider has also been exchanged for an A2. 

Has a chrome lightweight barrel. Very sharp looking gun. Will come with the box and lock. If you'd like to see more photos, please don't hesitate to email us and we can send you some. Please note that this used rifle has been modified and will not come with the original A2 grip, tri prong flash hider, etc. As such, we cannot guarantee it as new.