The idea with this guy is that there's swarms of these little, bloated critters skittering around and on the Barong that resemble bowling ball sized ticks. The Barong produces a strong smell from deep inside their "cannon" that attracts these things, and entices them to crawl inside.
Once they reach the back of the chamber, they trigger an automatic gag reflex that expels them across the field of battle into the enemy, where they rupture upon contact. Inside this living ammunition is a multitude of blind, maggot-like larvae, which are attracted to heat and sound.
Once they find living tissue, they quickly burrow inside of it, their small size making anything short of environmentally sealed armor useless. Their victims live out the final minutes of their life in agonizing pain before dropping dead in a fit of writhing convulsions.
Once the battle is over, and some hours have passed, these larvae will reach maturity and burst free from their "hosts", creating fresh new ammunition for any nearby Barong, to which they are attracted to by scent. If no Barong can be detected, the creatures seek out the nearest non-legion creature, and rupture - starting their loathsome reproduction cycle anew.
Even in victory against the Legion - forces attacked by a Barong must carry out the gruesome work of setting fire to their deceased comrades, in an attempt to destroy the gestating larvae buried deep within their flesh. The squeals of the larvae as they crawl desperately out of their flaming hosts can be heard for hundreds of yards...
I thought all beasts were controlled by the Founders?
exterminate those gun beasts at once men they is nasty 
Thanks!
