I still have the FN blue and white box that my rail came in. But since I just traded into the gun yesterday, maybe it came with it and the fella who owned it didn't give it to me with the deal. By the way, anyone know what size that allen wrench is to remove/install the rail? Is it a metric or English size. And ShipWreck, thanks for all your help last night. So many questions I threw at you, but I'm a newbie with this PS90, and sort of just traded into it on a whim, because my workmate wanted my AR, had no cash he wanted to part with, and said he didn't like the optic on his PS90. He said he only put 100 rounds in it, and got the rail with the intent of putting one of those little Tasco red dot sights(like the Docter site), but never did it. By the way, I like how small that little sight is, and as I told ShipWreck, I have a Eotech 512, but is the Tasco red dot better than the Eotech 512???