User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-98.192.166.156-20121205063637/@comment-83.223.121.252-20121205202444

As far as I know:

-Now their parts can´t be combined

-The medium class doesn´t exist now, they have moved medium bowguns to the two other classes.

-I heard that now the heavy bowguns can use an specific move, where the hunter supports the knee in the soil, wich allows to shoot ammo without reload (i´m not sure, if anyone can confirm...)