I'm assuming that you're talking about the rifle that's on the home page of this site?
That looks like a mid-length (i.e., you want a 9" rail). You have a lot of options here. First, you need to decide if you want drop-in or free-float. If you go drop-in, you have options like the Troy Industries, Midwest Industries, Surefire M85, or YHM. Most on here will tell you to go with a Daniel Defense Omega because it's drop-in, free float, and lighter than the aforementioned rails. If you decide to fully free float and are willing and able to do some light gunsmithing, you can go with the Daniel Defense, LaRue Tactical, or Knights Armament.
Personally, a drop-in should be fine for you. I would skip the laser (unless it's an IR laser, but I doubt that's what you're talking about). It all comes down to what tools you have and what you're willing to spend. There's a lot out there.