Militech High Power 15

Militech High Power 15 is assault rifle. A three-chambered, tri-barrelled, high-speed autogun for personal use! This alley sweeper has a firing rate of nearly 5,000 rounds per minute (cyclic), feeding from a fixed ammo drum or belt-linked 400-round hip pack.

Source

 * Solo of Fortune, pg.50
 * Blackhand's Street Weapons, pg.33