D-Max Sidewinder .458 D-MAX 6.5" Barrel 5 Shot Stainless Hogue Monogrip Direct Predecessor to Magnum Research BFR

Description:
MANUFACTURER: D-MAX INC
MODEL: SIDEWINDER
YEAR MANUFACTURED: EARLY 1990S
COUNTRY OF ORIGIN: UNITED STATES
SERIAL NUMBER: M23
ROLLMARKS: "DMAX INC. SPRINGFIELD SD .458 DMAX CAL." (ORIGINAL MANUFACTURER AND CALIBER IDENTIFICATION FROM THE PRE-BFR PRODUCTION ERA)
CALIBER: .458 D-MAX
CAPACITY: 5 ROUNDS
BARREL LENGTH: 6.50"
BARREL FEATURES: HEAVY PROFILE TARGET BARREL
ACTION: SINGLE ACTION REVOLVER
TRIGGER: SMOOTH SINGLE ACTION
IRON SIGHTS: RED RAMP FRONT WITH FULLY ADJUSTABLE REAR NOTCH
FRAME MATERIAL: STAINLESS STEEL
TOP STRAP MATERIAL: STAINLESS STEEL
GRIP: HOGUE MONOGRIP RUBBER WITH FINGER GROOVES
FIREARM FINISH: SATIN STAINLESS
CONDITION: GREAT
ADDITIONAL FEATURES: EARLY PRE-MAGNUM RESEARCH BFR DESIGN, UNFLUTED CYLINDER, OVERSIZED FIVE-SHOT CYLINDER, SERIAL NUMBER M23, COLLECTIBLE PREDECESSOR TO THE MAGNUM RESEARCH BFR
WHAT’S INCLUDED: REVOLVER ONLY

The D-Max Sidewinder represents one of the most significant revolvers in the evolution of modern big-bore handguns. Built in Springfield, South Dakota, this revolver was the direct predecessor to what would become the Magnum Research BFR, carrying over the oversized frame and massive cylinder design that made the platform famous. With its scarce production numbers and serial number M23, this example comes from the earliest days of the design's development.

Chambered in the formidable .458 D-Max cartridge, the Sidewinder was engineered for shooters demanding exceptional strength and performance from a revolver platform. The heavy 6.5-inch barrel provides excellent balance while helping tame recoil, and the adjustable rear sight paired with the red ramp front sight allows precise zeroing for hunting or long-range handgun shooting. The oversized five-shot cylinder reflects the robust construction required for cartridges of this class.

Ergonomics are enhanced by the factory Hogue Monogrip with deep finger grooves, giving the shooter a secure hold under heavy recoil. The smooth single-action trigger and wide target-style hammer make deliberate, accurate shooting straightforward, while the satin stainless construction offers durability and corrosion resistance. The unfluted cylinder further emphasizes the revolver's purpose-built strength and distinctive appearance.
Large-caliber hunting revolvers occupy a unique niche, and the Sidewinder was among the pioneers that proved a revolver could reliably handle cartridges traditionally associated with rifles. Its massive frame and robust lockwork established the engineering foundation that Magnum Research would later refine into the BFR line. This design remains respected for its strength, simplicity, and ability to withstand heavy hunting loads.

Collectors recognize the D-Max Sidewinder as a historically important firearm because it bridges the gap between boutique big-bore revolvers and the production Magnum Research BFR. Early examples with low serial numbers seldom appear on the market, making this revolver especially desirable to enthusiasts of large-frame single-action revolvers. It stands as both a capable hunting handgun and a significant piece of modern American firearms history.

***Please see pictures for condition and wear***

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All pre-owned firearms offered by National Armory are thoroughly inspected by our on-site gunsmith to ensure they are in proper working condition. While test firing may or may not be conducted, all firearms are evaluated for basic function and safety. It is solely the buyer’s responsibility to be familiar with and comply with all federal, state, and local laws regarding firearm ownership and accessory restrictions, including but not limited to magazine capacity and prohibited features. All sales are final.

Manufacturer: D-Max
Model: Sidewinder
Serial Number: M23
Barrel Length: 6.5
Condition: Great
Manufacture Date: 1990s

Price: $3,149.99
Shipping: $34.99
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