I used to use LaRue rails and Daniel Defense, both are great rails but I didn't like the feel of the rail as much as a round tube. When Troy came out with their Alpha rail, it was perfect for me.
The top has a solid rail and it comes with short sections of rail to attach anywhere else you want them to mount whatever you need.
I mount a light on the top rail with a VTAC mount and a front sight in front of the light on a 13" rail. I also have a sling attachment on the top rail just in front of the receiver. I have a sling stud on the bottom up front for a bipod or regular carry strap.
Take a look at them but if you want a full rail, LaRue or DD would be my choice.
