"Tactical" will be the new term Gun-Banner's will use in the next wave of anti-gun legislation. When the term "assault weapon" gets old and tired, they will switch their rhetoric toward "tactical weapons".
So, "Tactical" is now just one of those words that can mean just about anything. But what it originally meant was:
of or relating to combat tactics:
(1) of or occurring at the battlefront "a tactical defense"; "a tactical first strike" (2) : using or being weapons or forces employed at the battlefront "tactical missiles"