On the other hand, get a brake to QD your suppressor and you're pretty much stuck with it anyway. Pin it to a 14.5 and reap the benefit of an even smoother shooting gun. It's not impossible to UN-pin a barrel, weld over the brake and no one will ever know. I un-pinned a few Armalite brakes after the ban sunset and it wasn't a big deal.
As for a match 14.5" barrel, it'll work just fine. Money is made everyday so if you can, why not go with a top barrel?
