Variety of pieces for ar platforms or anything that has rails to mount on. Everything in the pictures have never been used, some pieces where mounted but I just didn't like the feel of them. I do not have the company name for the upper reciever as most of these items came in a battlebox. Over $500 worth of parts so make an reasonable offer please. Will consider trades of other firearm/parts. ** upper is sold and will sell items separately. Edited: upper was sold.