The Crucible Industries Cerberus-357 is a six-shot double-action revolver chambered in .357 Magnum, featuring three barrels arranged in a triangular cluster. The weapon fires from a single cylinder through whichever barrel is aligned by the rotary barrel selector — the shooter can choose between a standard four-inch barrel, a two-inch barrel for close-quarters work, and a six-inch barrel with a target crown for precision shots. Barrel selection is controlled by a thumb switch on the frame.

The Cerberus is an engineering exercise that somehow became a production weapon. Crucible's design team originally built the triple-barrel prototype as a proof of concept for a military contract that required a single sidearm adaptable to multiple engagement ranges. The contract fell through, but the prototype generated enough interest that Crucible produced a commercial run. The resulting weapon is mechanically complex, heavier than a conventional revolver, and undeniably versatile.

The Hellhound has a cult following among operators who appreciate mechanical ingenuity and don't mind carrying extra weight. The ability to switch between barrels mid-engagement — close range, then stepping back to the precision barrel — provides tactical flexibility that no other revolver offers. Whether that flexibility justifies the weight and complexity is a matter of ongoing debate in firearms forums that generates thousands of comments and zero consensus.