Up for sale is a 12in length ris rail and a corresponding length outer barrel that work well together. The rail is made from cnc'ed aluminum and is anodized black. It features ambi qd sling mounts and the rail sections are numbered. I can't confirm because I'm not the original owner, but I was told it was the "Avengers" brand, either way it's still a nice rail system. The outer barrel is also cnc'ed aluminum, I have no idea of its actual brand. It has 14mm negative threads, cuts for an a2 front sight, and is standard spec. Both are in good condition aside from normal ware and have no major issues.(Rail does have a rough spot near the back where someone torqued it on. It's not too bad but thought I should mention) Buyer pays shipping (~$10)