Zwerg's Smug Burst Rifle

This is a gun i made in the World of warcraft style for a school assignment. The gun is based on the goblin scrap engineering style which i really liked. **The Story of the gun:** After a orc raid on the goblin camp Zwerg lived he found out his gun was to weak so he started making a stronger one. He made a big cannon that shoots of big Goblin bombs, and attached a big bayonett on to it. He called it the Smug Burst Rifle, because it pretty much one shotted orc's and started to have a smug face everytime he used the gun.