[IamScotticus]

This

 

[jonnin]

now if those barrels came out and you could put in another 'mag' that would have been revolutionary.

 

[tzcomp]

now if those barrels came out and you could put in another 'mag' that would have been revolutionary.

But all barrels apparently fired at once. It would definitely clear a hallway, if not a room.

 

[RAT76]

Nope & nope. The barrels/chambers come out & they are double action repeaters.

THe biggest problem I see is a holster.

Harmonica Pinfire Pistols

A look at the short-lived and largely forgotten harmonica pistol....

uncrate.com

 

[IamScotticus]

Nope & nope. The barrels/chambers come out & they are double action repeaters.

THe biggest problem I see is a holster.

Harmonica Pinfire Pistols

A look at the short-lived and largely forgotten harmonica pistol....

uncrate.com

Ah, Pinfire! Hence the arching top strap. I have an old French pinfire in bad shape. I would love to ID it.
Pinfire didn't last long, but was soon surpassed by centrically mounted primers.

That video didn't work for me. Try this one at 7 minutes: