Rossi makes a nice dual caliber .410 and .22 lr, with two barrels, so you change barrels to change calibers. I mkae them up for ladies who have little ones still at home, arranging the weapon so a velcro strip receives an eight shell strip when the weapon needs to swing into action. I also put a vertyical foregrip on to allow the left or right off hand to hold the weapon while being reloaded and the hammer cocked. I’ve timed it and can get a first shot off faster with my system than someone can load and shuck and fire a pump for first round. Follow up rounds are not qiute as quick, but the eapon is safer and less complicated to operate, with not having to worry about closing the slide all the way like with a pump needs to be managed.
I have that Rossi dual, in 20 gauge and .22lr. It is a handy versatile little weapon to have around.