Technically it spits small blobs with flaming trails at a high rate of fire to generate a streamish look, but it's a bit unique in an arsenal of hard hitters. The fast firing Flamberge is another one (although it compares to Kaysers in HP/s), but the Koncerz (the default fireball the Hussar Mk I uses, with the characteristic yellow muzzleflash), Bardiche (the flak gun the player could use on the gunships) and Voulge (mini Lucifer style flux cannon) are either mid fire rate/high damage/high power use or low fire rate/really high damage/high power use. The Hussar Mk II will get a totally new weapon, which will have a rather high rate of fire thanks to the 3 barrels and cycle flag, and a high damage per second rate. This will come at the usual cost of high power drinking rate.
Edit: LOL at the RSPB thread...