The Flak Cannon is a weapon that appears in Unreal. It is described as a "somewhat cumbersome" weapon that uses jagged shards of metal as its ammunition. Primary fire unleashes a fast spray of shrapnel that ricochets off of walls, ceilings, and floors. Secondary fire launches a large, shrapnel-filled shell that explodes on impact, spraying shrapnel in all directions.
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Flak Cannon (Unreal Tournament)