No change must be made on the shotgun to be able to use these non-lethal shells. The general size of your shell is identical to usual twelve-gauge shotgun shells, producing a improve from a single to the opposite extremely easy. twelve-gauge rubber bullets are available in two primary varieties: buckshot https://tacticalrounds.com/product-category/home-defense-shotgun-ammo/non-lethal-12-gauge-ammo/