Although not as popular, lever-action shotguns remain all around. You use a lever to eject the shell and cargo a completely new one. They’re fast and flexible, primarily used in sporting events like Cowboy Motion Taking pictures. The 12 gauge is the preferred and broadly advised gauge for home defense https://glocknation.com/product/rock-island-traditional-single-shot-410-gauge-20-shotgun-ss-104/