The XO-16 TBR (Titan Battle Rifle) was intended to be a standard-issue Titan weapon. The 20mm round was belt-fed from a large capacity drum magazine. This weapon platform was heavily influenced by the A-10 Warthog's GAU 8/A Avenger Gatling Gun. The depleted uranium rounds engaged enemy armor and materiel in addition to personnel. If the Titan was deactivated or destroyed, the XO-16 could be used as a crew-served field gun. Heavy machinery, garbage trucks, and forklifts inspired the mechanically assisted reload sequence.