Magnum Research BFR4570B | .45-70 | 10″ Barrel | 5-Round

The Magnum Research BFR4570B is a large-frame, single-action revolver chambered in .45-70 Government with a 10-inch stainless barrel and Bisley-style white polymer grips. It is built on an extra-large stainless-steel frame and ships with a Weaver scope mount and drilled-and-tapped frame for optics. Intended for shooters who need a revolver capable of handling heavy rifle-caliber cartridges, it suits big-game hunting and precision silhouette or long-range handgun disciplines.

Product Specifications

• The manufacturer and model are Magnum Research BFR4570B (BFR, Long Cylinder).
• The caliber is .45-70 Government.
• The barrel measures 10 inches and is stainless steel.
• The action is Single Action.
• The cylinder capacity is 5 rounds.
• The barrel and frame finish is brushed stainless.
• The frame material is stainless steel.
• The grips are white polymer Bisley-style grips.
• The sights are black fixed front and adjustable rear.
• The package includes a Weaver scope mount.
• The frame is drilled and tapped for optics.
• The rifling twist is 1-in-14.
• The cylinder finish is brushed.
• The overall length is 17.5 inches.
• The UPC is 761226088240.

Built on a robust extra-large frame, the BFR4570B combines classic Bisley ergonomics and an exposed hammer with a precision 10-inch stainless barrel and a drilled-and-tapped frame for optics. Its construction and chambering make it a straightforward choice for shooters seeking a revolver optimized for large-bore field use and accuracy with handloads and heavy-for-caliber projectiles. The BFR4570B offers a purpose-driven platform for dedicated big-bore revolver applications where reliable, American-made engineering is a priority.

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