Shotgun Plug aka Duck Plug

thingiverse

My trusty Stevens Model 77h shotgun had gone missing its essential plug. To use my shotgun for small game hunting in Pennsylvania, I needed a plug to limit the gun's capacity to just three shells. A clever solution was to fashion a makeshift plug from a wooden dowel - no need to hunt one down or resort to fiddly 3D printing. Online research revealed that this plug is commonly known as a "duck plug," a requirement for duck hunting as dictated by federal regulations. I designed my plug specifically for my Stevens shotgun, but I suspect it could work just as well on other models. In my experience, the plug has worked flawlessly and remains remarkably silent.