I'm thinking of adding a BMAS triple mount in front of the front sight for a laser/flashlight.
Does this get really hot and transfer heat to your accessories during rapid fire?
Also does anyone make a mount that attaches to the top rail, but lets you attach things low and to the side, below the sight plane?
Triple mount is a bad idea. You should never hang anything off your barrel.
That is why they make handguards with rails (floating & non floating - cheap and expensive).