I swear they're monitoring NCD for ideas

It is public and (relatively) common knowledge that an Abrams tank can fire accurately at speed over rough terrain by postponing the firing of a shell by just a fraction of a second until the gyroscopes and computers determine that tank is "floating" at the apex of a bump.

That tech has existed since the 1980's.

The implementation shown in this gif may be noncredible, but the concept most certainly belongs in the other place.

Oh, does this fire automatically when aligned with the target? That's neat.
- Trigger bot
- I think that’s how the TrackingPoint system works as well.

Why not? It might not need to actually hit anyone, just the chance of being hit is probably enough to scare anyone away.

I wouldnt wanna be in a trench or field and suddenly hear gunshots coming from above.

Perfect for suppressive fire and/or diversion.

Which of you suggested bracing the gun by pointing it directly into one's crotch while attaching it to the drone?

It's common Reddit knowledge to align the barrel with the "cylinder" to get to the proper mounting position.
All of us

Soon we will have noncredibleyetcredibledefense.

It already is. It's basically science. These ideas can all be tested by militaries across the world
- So, some of our ideas we start need to pattern. Nocredibledefense LLC/BV/GmbH/ltd and wait until Raytheon/Boeing/Northrop Grumman will acquire us. Win win.

Just wait until it's gimbal mounted with head tracking

RIGS on the original psvr used this method for aiming the guns on your mech. Obviously aiming in a game vs an actual fpv drone is different, but it was remarkably intuitive once you got over the looking one way and moving the other nausea.
- DJIs Avata 2 has some interesting head tracking features.

Now put a bayonet on it.

Tell them I love them

I assumed this was the first idea but the accuracy wasn't good enough.

Honestly, probably doesn't need to be great or even good. Two or three of these could strafe over a trench or other exposed position and just spray. Even if it doesn't cause great physical harm, the sheer terror of it would be useful.
- Suppressive fire is a thing, and it does look like this would be good enough to do that.
  
  The real limitation is magazine capacity for that role. Slap a drum mag on there instead and you've got a winner.

It needs a little work on the recoil compensation, otherwise it's going to be a sitting duck every time it fires off a burst.

Just attach another ak firing in the opisite direction.
- You joke, but that would probably work

The MQ-27 Dragonfire is now real, a year ahead of schedule.

I feel like you could probably hear it and shoot it down yourself before it would have any decent chance of hitting you. It would probably be much more effective to have the drone fly as high as possible and the gun positioned to fire straight down.

If there's enough drones in the air and it's the right area I'm guessing it could sneak up on you. It's essentially just a suicide drone with longer range and potential reusability (but less reliable lethality).
Makes more sense if it's going hunting for Russian drones.