Now granted all men are not alike, but men in general have big, thick fingers. They cannot manage fine motor skills as well as women can. Men usually have heavy upper-body musculature, so you could expect most of them to easily hold even a heavy gun without difficulty. (For example, a Desert Eagle would be a good handgun choice which takes advantage of a man’s usually well-developed gross motor skills).
On the other hand, men often have difficulty shooting smaller guns. Their oversized hands can be an issue. So can the feeling perhaps that a little gun is not manly enough, or is designed only for wimps and pansies. For these reasons, smaller guns might be best left unconsidered even when a smaller gun might otherwise be well-suited to the task for which a man wants a gun.
Because men are generally less precise and less patient than women are, it is best to avoid guns which require them to carefully align the sights and gently squeeze the trigger without disturbing the sight picture.
Therefore, a shotgun, perhaps a 12-gauge, is probably the best gun for a man. It is big and powerful, thus avoiding the social scorn caused by using a smaller gun. Because the shot can be expected to spread somewhat, an impatient or imprecise man will not have to carefully align the sights. Many shotguns don’t even have sights. Better still, a 12-gauge pump-action shotgun sounds masculine in every way. The very name is masculine, and the gun itself sounds intimidating and powerful both in preparing to shoot and in actually firing. Working a pump action also allows the man to flex his biceps and use his usually well-developed gross motor skills so that he does not become frustrated or bogged down in unaccustomed detail work.