9 mm to .410

[Clark McCombe]

Does anyone have experience with the adapter to fire 9mm in a .410?
Is there a downside to trying this?

[Frank Srebro]

I'm not aware of such an adapter and I wonder about how it incorporates an extractor for the rimless 9 x 19 cartridge. Or do you push out the fired casing with a dowel or such?

[Clark McCombe]

People also ask
Can you shoot a 9mm out of a 410 shotgun?
This adapter allows you to shoot 9mm Luger out of your 410 Break Action Shotgun! Smooth Bore 2.5" Adapter. For 3" Chambers. It's like having another gun for pennies.

Above is a copy from google.
There are also YouTube videos.
I have my suspicions - that's why I though I should ask