I have for sale a black Magpul UBR which was one of the preproduction versions (comes with four sling mounting points, two up front and two in the rear of the stock). Comes with the stock tube and extra cheek riser. This stock is better than 99%. I can't find any blemishes as I only shot about 25 rounds with the rifle that this stock is on. The only thing you need to add would be the spring and buffer. I will send the stock as it was sent to me by magpul, with everything included. Asking $275 shipped.