Here is my deductive reasoning. If you’re going to mount the light where the Strike Industries or the short Briley rail provides, you might as well just use a IWC mount and skip the weight/cost penalty. The Truckee has the mlok sockets in the wrong spot in my opinion, so it’s a no go.
Now if you can deal with the weight penalty of the longer Briley rail, you pick up the option of mounting the light so that you’ll have minimal barrel shadowing. This is a big step forward from the IWC or Ava Tactical mounting options which have massive amounts of shadowing to the opposite side that the light is mounted.
It’s tough to beat the ergonomics of the OEM handguard. I haven’t handled the Briley rail yet, but I imagine it’s not terrible. Add some nice rail covers and it’ll be better. The Strike Industries rail felt good, but it had its stupid mounting system. It also mounts a light about where the IWC/AVA solutions do, so why bother?
As for mounting a laser, as long as your expectations are forgiving, you’ll be alright. The rails don’t quite seat to the same place every time. It’ll be good enough for shotgun distances.