I find his recently stated positions on guns more than acceptable. My concern is that anyone who allows extant events to change his or her opinion on a particular subject suggests a deficiency in moral principles. Those principles guide you in times of crisis, in circumstances in which it seems everyone pressures you to cave in to abandoning them to meet some kind of emergent threat.
Your freedoms are never taken away. They're sacrificed. Free societies willfully give up their freedoms in times of crisis. I know plenty of educated people who can easily succumb to that temptation. Competent leaders don't yield to popular pressure. They don't bend to political will. In times of crisis they provide stability and reassurance, founded on principles they hold to their core, and one thing is certain: we will face some kind of crisis in the future.
We could certainly do a lot worse than Drumpf, but he just doesn't inspire that kind of confidence.