This has to be so insanely expensive... I assume there are a ton of small machined or 3d printed channels or something to accomplish that?

Also how do they manage to have different notes play in sequence? A single chord shouldn't be too difficult but changing notes seems like it'd be very complicated without tiny valves or something...

Without any further reading, I'm assuming each bullet is tuned to play a certain note, and you play the national anthem by firing a bunch of them in sequence

That's simultaneously less technically impressive and also even more 'murrican.

So you're saying I can make it play bad apple if I rearrange the bullets

That would be a great gun in borderlands, choose your tune and it toots from the bullets

u could get multiple notes in order out of em if they had a tracer base that unblocks more holes while burning off during flight

Though that can only open more holes, right? It couldn't close the holes from earlier notes. Also, the cavity where the tracer material was would connect all the holes, which could affect their sound I think

hmmm yeah it can only open new holes, but by designig internal channels between the holes and using some sort of solid state valve design (tesla valve) it could mabe be possible to still do selective tones, at this point u build some sort of pneumatic logic gate so its probably touring compatible.

Doom on a bullet, when?

Get back to me when it plays the Benny Hill theme song.

I mean there are pneumatic logic gates but I was thinking they wouldn't want each bullet to be $1000 of intricate manufacturing (unless it's for the US military, in which case each bullet is $10000 of intricate manufacturing.)

The Army's XM7 can do that, but there's a nuance.

Yes but because the military industrial complex arm of the government is subsidizing it.

We treat them like they're free

make the bullets tracers too and firethem in a grid for each frame.

It could be much simpler. Like a flûte.

I'm going to guess the military wasn't the main audience here, but rather your typical gun nuts.

You could in theory make a channel with a bunch of different stable whistle frequencies, and add some other aerodynamic feature that kicks it through them. I doubt you could reasonably do more than a few notes that way, though, and you probably have to hit them in order.

More likely it's just multiple bullets, as the other reply said.

There's something fundamentally wrong with the USA, for real.

Update: That said, it's a fake article. Silly dumb me.

It's false https://bulletin.accurateshooter.com/2011/12/from-italy-with-holes-the-radical-ported-compbullet/