These items are mentioned in the GOA piece as possible moves toward the evisceration the Second Amendment.
Gun import bans
Microstamping of firearms
Ammunition bans
Full implementation of anti-gun UN Arms Trade Treaty
Illegal amnesty which locks in millions of new, anti-gun voters.
But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.