Each BFR is meticulously inspected and hand polished, hand fit and hand assembled. Chambered for cartridges that provide heart-stopping power for the serious handgun hunter. Interchangeable cylinders in calibers that utilize the same bullet diameters. The .450 Marlin and .45/70 are fully interchangeable. Free wheeling cylinder allows the shooter the ability spin the cylinder either clockwise or counter clockwise to load or unload the revolver. Many of the BFR's calibers will shoot groups of well under 2" at 50 yards with mechanical sights. Fully adjustable rear sights & a full complement of different front sight heights allow guaranteed point of impact for all individual shooting styles. All guns are proof fired after assembly.