People posting pictures of tommy-guns and hailing these as the answer to combat the Borg always make me laugh. How stupid can you be?
The tommy-gun worked because the Borg Collective had never been shot at with a tommy-gun, not because some weapon from the 1920s is the holy-grail to defeating Borg drones.
You can't mow down hundreds of drones with them time after time because they adapt, just like how phasers work for a while.
Surely anyone with working brain can understand that?
The thing that's always bugged me about that line of thought is that it's somewhat hard to believe that not once, in all the worlds they have assimilated, have they encountered simple slug throwers. A bullet is a bullet is a bullet, they shouldn't have to adapt to every specific type of gun. They're also vulnerable to direct physical assault.
Is there an example in all of Trek where the Borg have adapted to attack by a weapon that is not energy based?
I don't believe they can adapt to physical force, which includes bullets, rockets, flamethrowers, etc.... You can kill them in hand to hand. It's not so much a matter of that i think. Most planets use energy weapons for defense and if the borg ever found themselves facing a ground army of tanks, rocket launchers, soldiers armed with assault rifles, they can simply destroy them when they are out of range. Also their Cubes can cut up pieces of a planet's surface and suck up the poor suckers to be assimilated. this is what happened in Vendetta.