Quiet Shotgun
How far would you go to enjoy 12 gauge shot gunning without disturbing the neighbors?
Wendell Diller has invented a lightweight shotgun barrel extension that is about 5 feet long!

When Sean Coffey’s honker call pulled a flock of geese within range, paraplegic Dave Guzzi swung his shotgun with a 7-foot-long barrel and dropped one of the geese dead.
There was a moment of stunned silence — and not after the goose tumbled out of sky. The morning stillness was barely disturbed when Guzzi pulled the trigger on his extraordinarily long shotgun.
The sharp blast of the 12-gauge was replaced by a muffled fzzzttt. Sitting just four feet away, I was struck by how the shotgun sounded like a loud air rifle. Guzzi, who lives in Burnsville, laid the experimental shotgun between his legs and waited for more geese.
“Pretty amazing, isn’t it?” he said of his gun.
Apparently it is also useful for deer hunting.

More here.

This barrel is called the Metro barrel and was sold through Cabellas or that is where I purchased mine 8 years ago. Hastings was the importer or contractor but the building company is Verney-Carron from France. The barrel is the bottom barrel of a over and under shotgun that has 64 ports yes I counted. L.P. Brezny is the designer and it started in 1993 to shoot crows. If you have any questions I would be glad to help.
How does it work? Is it ported? Can I have it?
What’s sad is that it is necessary to go to such lengths (in this case, 7 feet) to get around draconian silencer laws and regulations.
Respectfully disagree, Thomas. That would make my Henry lever action carbine “suppressed” when I fire .22 Shorts. It’s so quiet I don’t even need ear pro. I’ve used louder staple guns. So should I NFA register my stock Henry because of a barrel to powder ratio?
This is technically a sound suppressor. Could get in serious trouble if it is ruled such without the $200 tax stamp.
or worse they will increase the minimum length to 6 feet!
Obviously no one needs a barrel less than 6 feet, only criminals and terrorists
That’s amazing! Just watch, soon the BATFE will issue rules about maximum barrel length too…