They don't free float them because their QC isn't good enough to catch that stuff before it gets out the door. Or, more accurately, it just isn't cost effective for them to do so.
They'd probably love it if all their barrels went out the door free floated, but the tolerances just aren't that close on the stocks, and they're in the business of cranking them out. Do yourself a favor, float the barrel and bed the action and receiver tang.
That is not the case...at all.
Remington puts 2 pressure points at the end of the stock if it is wood, and a band on the fore end if it is synthetic. They do not free-float on purpose...it is intentional.
