Tactical is practical, man. Whatever gives you an advantage in the task at hand, makes whatever you're using "tactical". Not the label on the package.
For me to use my 870 and sit in a room and wait for police, I don't need a light, sling, side-saddle, optic, bayonet, collapsible stock, and cupholder. Just a gun that works. If I'm clearing houses, going into bear country, guarding a group of prisoners, going into combat, bugging out, camping, hunting, etc, the gun will have what it needs to do that task the best.