Ban on imports
Have heard a report (no link yet) that BATFE has announced a ban on importation of "nonsporting" receivers and barrels, whatever those might be.
A key problem with the statute (and one which ought to be addressed by amendment) is that it permits importation bans of firearms not generally recognized as suitable for sporting purposes. As far as "sporting purposes" goes, the Second Amendment isn't about duck hunting, as they say. An equally great problem is the "generally recognized" portion. It allows a ban based on the argument that "maybe it is suitable for sporting purposes, but it's isn't "generally recognized" as so suited." That's how the initial import ban was justified -- review a bunch of gun magazines, and argue that there aren't enough references to a gun, or a type of gun, being useful for sport: whether it is or isn't suitable is no longer the question, and the agency can decide just how many mentions it takes to make something "generally recognized."