Board Thread:Naruto Discussions/@comment-31058120-20170228032007/@comment-734582-20170228120126

It depends on what era of gun you're talking about. Guns were used alongside swords and plate mail for quite a while (hence the term "bullet proof" - they proved the worth of armor by shooting at it).

Old muskets were very inaccurate and you'd be lucky to hit someone, let alone in the head. Modern firearms on the other hand....