While a long gun would be appropriate to have with your family if you are barricaded in your safe room I don’t see any advantage of 16-20 inches of bbl [with a light on the bbl] if you decide to investigate something suspicious in the middle of the night. Unless you have mirrors all over your house to see around all the blind corners most homes have your long bbl is a liability. I’d rather have a 4-5 inch bbl handgun held close with a tactical light in my weak hand. If the sound turns into my 20 year old grandson I’ve not swept him with a loaded gun in an adrenaline fueled state. My handgun can always be extended with support from my weak hand for a more accurate shot. I personally like the Harries method. Just my .02.