[gundog]

It wasn’t until thirty years later that the federal government imposed a ban on the manufacture and sale of arms it considered “assault weapons,” and that prohibition expired in 2004.

Nothing in that ban addressed the semi-automatic capability of the weapons. Features such as bayonet lugs, pistol grips, and muzzle brakes were banned.

[Scrambler Bob]

and muzzle brakes were banned.
= = =

I thought it was ‘flash hiders’ that were banned.

And muzzle brakes were OK. And sometimes the only way to tell the difference was by military part description and part number.