as the title says, Rock River Arms AR-15 A2 lower with a unmarked upper in great shape. barrel is a 1/9 twist and it is calibered in a .223/556 NATO. Extremely low round count for a AR at around 250. I have two AR's and only need one so I need to sell this to buy a new toy. come with one mag, sling and front vertical grip. SOLD Sorry about the terrible pics, it is in great shape with no dings or scratches on outside and rifling of course is in great shape with such a low round count. I am prefer FTF in the Portland metro area and I do not accept checks of any kind, cash only thanks! Thanks for looking guys and gals!