Just last month I posted a video on YouTube that displayed a functioning, integrally suppressed shotgun. The video also included instructions on how you could construct your own, assuming it is legal in your state. Since the video, I have constructed a second, more durable suppressor, and made a few small tweaks to the design. I’ll be posting updates on how the shotgun performs with some subsonic shells I ordered just for this test.
NOTE: For those who haven’t watched the video, I’ve provided it down below. Version 1.0 was able to reduce the sound of standard Winchester birdshot so that hearing protection wasn’t needed.