This rail came on an upper I just bought, actually received it Friday, so other than putting a front sight on it, it hasn't seen any use. I love the rail, I actually have another 14" Rev on my 14.5" upper. I'm selling this one because I want to try out a SLR Rifleworks 15" Solo rail instead. This REV rail has an AIM Surplus logo on it instead of the typical Fortis shield logo, but otherwise is the exact same as every other REV. If someone would rather have the Fortis logo, I can sell them the lightly used one off my 14.5" instead.