They sell this integral gun for under 500 pounds. I haven't found an equivalent in the US yet. Anyone know a custom builder?
(https://www.hushpower.co.uk/wp-content/uploads/2023/01/Yildiz_410_WEB-1140x209.jpg)
https://www.youtube.com/watch?v=uTz22cxc8qY
A local gun shop just started selling all kinds of contraptions like the one in the video. I havent asked if they will work on a shot gun but they are interchangable on rifles for sure. You need a permit / license to own them here. Takes 9 months to a year to get that permit from what I been told.